Show filters Hide filters

Refine your search

Publication Year
1-36 out of 198 results
Change view
  • Sort by:
10:02 IWF (Göttingen) English 1967

Differentiation and Growth in Micrasterias denticulata (Conjugatae)

Desmids in nutrient solution. Nuclear division and septum formation, development of the new half-cells, migration of the nuclei and chloroplasts into the half-cells, differentiation of the chloroplasts and cell walls. Osmotic experiments to demonstrate the mechanics of morphogenesis: plasmolysis by glucose solution, cell wall formation under conditions of reduced turgor. With time-lapse.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: English
10:03 IWF (Göttingen) German 1967

Differenzierung und Wachstum von Micrasterias denticulata (Conjugatae)

Zieralgen in Nährlösung. Kernteilung und Septumbildung, Entwicklung der neuen Halbzelle, Einwandern des Zellkerns und der Chloroplasten, Chloroplastendifferenzierung und Zellwandbildung. Osmotische Versuche zur Mechanik der Formbildung: Plasmolyseform in Glukoselösung, Zellwandbildung bei reduziertem Turgor. Mit Zeitraffung.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: German
07:42 IWF (Göttingen) Silent film 1967

Rostbildung auf Reineisen - Anfangsstadien

The film shows the initial stages of rust formation on a polished surface of pure iron at microscopic magnifications. The experiments were made in an atmosphere of 75 per cent relative humidity with small additions of hydrochlorid acid acting to accelerate corrosion. Using the fast motion technique it is possible to observe the individual stages of rust formation: First, corrosion points occur which, as corrosion proceeds further, grow into filament-type shapes spreading all over the iron surface. In some instances, the dependence of the direction of filament growth on the polishing direction can be observed. Also, scratches on the metal surface display a greater affinity to corrosion in some places.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
08:16 IWF (Göttingen) Silent film 1967

Equus quagga (Equidae) - Paarungsverhalten

The first part of the film shows the sexual behaviour of a young mare and a stallion, beginning with the animals defecating and urinating. Precopulatory activity ensues. During the peri-oestral periods copulations are resisted by the mare. A number of mountings without intromission are shown. In the last sequence complete copulation takes place. During mating activity other members of the group are seen to contact the mating partners.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
15:04 IWF (Göttingen) Silent film 1967

Equus quagga (Equidae) - Kampfverhalten

The film shows the various fighting methods of zebras (Equus quagga böhmi), as seen in their natural surroundings. All methods of fighting occur also in the playful arguments between young and adult stallions, but at a slower pace. There is virtually no ritualisation and the zebra can, in any case, not inflict serious injuries. The first part of the film shows fighting games among young males: neck wrestling, biting in the standing and sitting position, and encircling. This is followed by playful fights between adult males and the last 6 sequences are of serious fighting among male zebras.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
06:11 IWF (Göttingen) Silent film 1967

Equus quagga (Equidae) - Hautpflegeverhalten

Various displays of skin hygiene in the plains zebra. Places without vegetation serve for dust baths. The animals lie down, roll onto their sides and over their backs. In further sequences they rub themselves on trees, bushes, and rocks, scratch their heads with a hind hoof, and groom each other in places, such as neck and shoulder, which they themselves cannot reach.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
06:48 IWF (Göttingen) Silent film 1967

Haplochromis burtoni (Cichlidae) - Ablaichen

The film shows the spawning behaviour of the mouthbreeding cichlid, Haplochromis burtoni. As in related species it is only the male that builds the spawning pit. The female merely shows rudimentary digging movements. The male leads the female to the spawning pit. While vibrating in front of her, he displays the coloured egg-dummies on the spread anal fin. After several spawning attempts, the female begins to lay eggs, which she immediately takes in her mouth. Subsequently, she attempts to take up the dummy eggs from the male's anal fin. She thereby takes up sperms released by the male, and inseminates the eggs in her mouth.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
02:28 IWF (Göttingen) Silent film 1967

Chlamydera nuchalis (Ptilonorhynchidae) - Balz und Kopulation

The male presents items he has collected and his orangecoloured crest to the female, who remains in the nest. After circling the nest several times, the male completes copulation.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
02:16 IWF (Göttingen) Silent film 1967

Chlamydera lauterbachi (Ptilonorhynchidae) - Bauen an der Laube

The bower-bird Chlamydera lauterbachi is building its bower. Two side and two cross walls are built from a large number of twigs, which are woven together so well that the bower can be carried away in one spiece. The bower-bird can also be seen coating the walls of the bower.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
01:45 IWF (Göttingen) Silent film 1967

Menura superba (Menuridae) - Nahrungserwerb

The lyre-bird scratches the ground with both feet alternately and picks up exposed food. The prominent tail appears briefly in the picture; the bird then drinks.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
03:12 IWF (Göttingen) Silent film 1967

Chelonia mydas (Cheloniidae) - Verlassen der Brutstelle nach dem Schlüpfen

As soon as the young green turtles (Chelonia mydas) have left the shells they dig themselves out of the nesting hole with efficient movements. They rush down the beach to the shore and swim off. At the shore some seagulls catch some of the young ones and try to devoure them. Once fallen on its back a young turtle can turn again easily. Whilst running the turtles move forelegs and hind legs alternatively, swimming they beat their forelegs synchronically and stretch their hind legs plainly backwards.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
04:42 IWF (Göttingen) Silent film 1967

Paradisaea raggiana (Paradisaeidae) - Balz und Kopulation

The great bird of paradise perches in the crown of a tree and flaps rhythmically with upright wings. Later he hangs down at an angle and unfolds his brilliant decorative feathers which he displays in many variations. This followed by copulation with one of the females present.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
02:40 IWF (Göttingen) Silent film 1967

Paradisaea rudolphi (Paradisaeidae) - Balz

A blue bird of paradise is suspended with head down, spreads his blue decorative feathers and moves rhythmically. A wide spreading brilliant blue area with a dark centre spot results. The white beak and white eye spots form an additional contrast.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
30:18 IWF (Göttingen) German 1967

Mitteleuropa, Tirol - Nikolausspiel im Tauferertal

The boys leaving school ( 16 to 22 years old) study and perform the St. Nicholas play in the Tauferer valley every year in some houses of the village. Performers: harbingers, bajazzos, Zillertaler, country constable, angels, St. Nicholas, small and tall devil, old man, death, Dr. Eisenbart, farmer, Sterzinger, priest, Klaubauf, gipsy.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: German
02:44 IWF (Göttingen) Silent film 1967

Prionodura newtoniana (Ptilonorhynchidae) - Behängen der Reisigtürme

A male crested golden bird Prionodura newtoniana decorates the two parts of his bower with blossom and lichen.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
04:26 IWF (Göttingen) Silent film 1967

Paramoeba eilhardi (Amoebina) - Parasitische Bakterien im Zellkern

After presenting the marine amoeba Paramoeba eilhardi, the film deals with the multiplication of parasitic bacteria in its nucleus. After bacteria colonies form within the nucleus the amoeba disintegrates. The bacteria get into surrounding seawater and begin to move.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
09:11 IWF (Göttingen) Silent film 1967

Naegleria gruberi (Amoebina) - Nahrungsaufnahme und Fortpflanzung

Naegleria gruberi belongs to the "amoeboflagellates" and occurs in two forms: as an amoeboid creeping form and as a flagellated swimming form. The creeping form is capable of encysting. After the amoeda's hatching from the cyst, the film shows its locomotion and the activity of the pulsating vacuole. We then see the flagellated swimming form and its transformation into the creeping form. After shots of the nuclear and cellular division, the film concludes with the encystment process.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
05:46 IWF (Göttingen) Silent film 1967

Hartmannella castellanii (Amoebina) - Nahrungsaufnahme und Fortpflanzung

Hartmannella castellanii belongs to the so-called "limax amoebae". It is capable of encysting. After the amoeba's hatching from the cyst, we can watch its locomotion. During phagocytosis of bacteria of different sizes, the dissolving (Iysis) of the bacteria in the food vacuoles can be observed. After showing nuclear and cellular division, the film concludes with shots of the encystment.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
03:53 IWF (Göttingen) Silent film 1967

Corallomyxa mutabilis (Amoebina) - Formwechsel des Plasmodiums

Corallomyxa mutabilis is multinuclear and forms large plasmodia which grow indefinitely, with a compact but mostly net-shaped appearance. If plasmodia touch they can fuse. Reproduction is by budding. Branches rise vertically from the plasmodium and, after a certain time, detach themselves and float freely in the seawater.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
05:55 IWF (Göttingen) Silent film 1967

Aporrhais pespelecani (Prosobranchia) - Lokomotion

Locomotion of the marine prosobranchiate Aporrphais pespelecani (Pelican's foot). Locomotion is not derived from typical creep movements, but from so-called "going on crutches". The shell whorls on the one hand and the shell projections on the other form a kind of tunnel in which the foot can move freely. If the foot is set down, the spiralled shell is lifted, and only the two projections prevent it from rolling over. With greater stretching of the foot, the shell tilts forward slightly and then back again to the ground. The foot is retracted and set down again a little way ahead. The result is a zig-zag form of locomotion.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
Offline Collection IWF (Göttingen) Silent film 1967

Mikronesier (Gilbert-Inseln, Onotoa) - Anfertigen eines Drachens

A man from the atoll Onotoa builds the framework for a kite from pre-weighed sticks and binds them together with coconut leaf stems. This frame is covered with thin strips of pandanus leaves. The finished kite is attached to a string of thin coconut fiber cord and is flown.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
Offline Collection IWF (Göttingen) Silent film 1967

Mikronesier (Gilbert-Inseln, Nonouti und Onotoa) - Angeln

Shows various techniques used by the people of the Gilbert Islands to fish: one man pegs his fishing lines to the shore of the lagoon on Nonouti and returns later to retrieve the catch; one man sits on a gangway near a rocky bank of Nonouti and uses mussel bait to catch fish, which he kills with a bite to the head; a man cuts his fishing rod from wood in the bush, catches small fish and hermit crabs as bait, and then angles successfully in the crevices of the reef; and in the open sea near Onotoa a man in a sailboat catches flying fish with coconut meat as bait.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
Offline Collection IWF (Göttingen) Silent film 1967

Mikronesier (Gilbert-Inseln, Nonouti und Onotoa) - Rochen-Jagd

Shows two scenes of ray hunting. In the western lagoon of Onotoa men swim and dive to hunt rays. When an animal has been speared it is transported home on a sailboat and is divided up on the beach. During the long excursion members of the crew shoot fish underwater with rubber slings and iron arrows. Mussels are caught on shore for immediate consumption. In the northern lagoon of Nonuti men are shown maneuvering their sailboat in the vicinity of a large stingray, and spearing it.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
Offline Collection IWF (Göttingen) Silent film 1967

Mikronesier (Gilbert-Inseln, Tabiteuea) - Palmsaft-Gewinnung

A man scales a coconut palm tree that is already prepared to tap for palm sap. Empty coconut shells are hung under the tap as containers to collect the sap. The resulting palm syrup is diluted with water and the man drinks it with his children.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
Offline Collection IWF (Göttingen) Silent film 1967

Mikronesier (Gilbert-Inseln, Tabiteuea) - Bau eines Schlafhauses

Shows all of the important steps undertaken in a ten-day working period as a house is constructed in the village of Buariki on the atoll Tabiteuea. This sleeping house is built in a style which has been customary in the Gilbert Islands since the seventh century - a four-post house of rectangular design with a gable roof, no walls, and a platform built about one meter off the ground. While the men finish the frame construction the women work to make roof coverings from old coconut palm leaves which are tied to the lattice work.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
Offline Collection IWF (Göttingen) Silent film 1967

Mikronesier (Gilbert-Inseln, Onotoa) - Schwimmstile

Demonstrates the swimming styles of the natives of the Gilbert Islands including the crawl, the backstroke, the sidestroke, dolphin-like swimming, distance diving, transporting items while swimming, and treading water.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
Offline Collection IWF (Göttingen) Silent film 1967

Mikronesier (Gilbert-Inseln, Tabiteuea) - Fischfang mit Zugnetz in der Lagune

A couple from the village Buariki unfold a dragnet in the nearby lagoon in an arc form that closes into a circle. The fish in the enclosure become caught in the mesh of the net and are given to an accompanying child for transport back to the village.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
Offline Collection IWF (Göttingen) Silent film 1967

Mikronesier (Gilbert-Inseln, Nonouti) - Bereiten von Kokosöl zur äußerlichen Anwendung

A woman in the village of Tetua grates the meat taken from fully ripened coconuts and presses the milk out of it. The resulting mash is boiled over a fire in coconut shell halves until just the oil remains. The oil is purified, reheated, and enriched with an aromatic substance.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
Offline Collection IWF (Göttingen) Silent film 1967

Mikronesier (Gilbert-Inseln, Nonouti) - Fangen und Sammeln von Meerestieren auf dem Ostriff

A couple from the atoll Nonouti captures sea animals on the reef at ebb tide. While the man catches fish hidden underneath the coral limestone, his wife probes the crevices of the reef for eels. She also catches individual fish and gathers some mussels.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
Offline Collection IWF (Göttingen) Silent film 1967

Mikronesier (Gilbert-Inseln, Nonouti) - Herstellen und Benutzen des Feuerpfluges

A man cuts pieces of wood from a dead branch and demonstrates how a rubbing motion ignites the wood dust.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
Offline Collection IWF (Göttingen) Silent film 1967

Mikronesier (Gilbert-Inseln, Onotoa) - Schlagstabspiel »bwerera«

Young boys of the village Buariki play this circle game which revolves around a hole in the ground, a small stick placed over the hole, and a large stick placed vertically in the hole.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
Offline Collection IWF (Göttingen) Silent film 1967

Geheime Kampfmethoden auf Onotoa im Gilbert-Archipel

A master of secret martial arts of Buariki shows self-defence techniques of kaunrabata (wrestling defence), oro (defence of unarmed attacks) and rawekai (defence of armed attacks),
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
Offline Collection IWF (Göttingen) Silent film 1967

Mikronesier (Gilbert-Inseln, Nonouti) - Hahnenkampf

Two men from the village of Tetua arrange a cockfight.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
Offline Collection IWF (Göttingen) Silent film 1967

Mikronesier (Gilbert-Inseln, Nonouti) - »tirere«-Tanz »ngeaba«

Costumed men and women sit together in front of the meeting house in Routa. Each one holds a wooden rod in each hand. As the people sing, they tap rods with the people sitting next to them.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
Offline Collection IWF (Göttingen) Silent film 1967

Mikronesier (Gilbert-Inseln, Tabiteuea) - »ruoia«-Tanz »kawawa«

Under the direction of a dance leader, a group of men and women in traditional dress perform the kawawa, the introductory song and dance of the Gilbert Island ruoia series.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
Offline Collection IWF (Göttingen) Silent film 1967

Mikronesier (Gilbert-Inseln, Onotoa) - »batere«-Tanz

Six costumed girls perform a standing dance in front of the meetinghouse in Buariki. They are accompanied by a choir of men and women and by drum beats.
  • Published: 1967
  • Publisher: IWF (Göttingen)
  • Language: Silent film
out of 6 pages
Loading...
Feedback

Timings

   83 ms - page object
   36 ms - search
    1 ms - highlighting
    0 ms - highlighting/16526
    0 ms - highlighting/16044
    0 ms - highlighting/16550
    0 ms - highlighting/16468
    0 ms - highlighting/14443
    0 ms - highlighting/11391
    0 ms - highlighting/16873
    0 ms - highlighting/16537
    0 ms - highlighting/16167
    0 ms - highlighting/14945
    0 ms - highlighting/16553
    0 ms - highlighting/16467
    0 ms - highlighting/17077
    0 ms - highlighting/16049
    0 ms - highlighting/16186
    0 ms - highlighting/16520
    0 ms - highlighting/11394
    0 ms - highlighting/16168
    0 ms - highlighting/15017
    0 ms - highlighting/15022
    0 ms - highlighting/11397
    0 ms - highlighting/16523
    0 ms - highlighting/16519
    0 ms - highlighting/16541
    0 ms - highlighting/16042
    0 ms - highlighting/16047
    0 ms - highlighting/16024
    0 ms - highlighting/16545
    0 ms - highlighting/16048
    0 ms - highlighting/16169
    0 ms - highlighting/16046
    0 ms - highlighting/16539
    0 ms - highlighting/16556
    0 ms - highlighting/16555
    0 ms - highlighting/16045
    0 ms - highlighting/16542

Version

AV-Portal 3.8.0 (dec2fe8b0ce2e718d55d6f23ab68f0b2424a1f3f)