The American Naturalist

There is no evidence that a bird in the act of soaring ever remained stationary in
still air for an instant ; and whether air is hurled against ... Solution of the problem
" is unchanged by “ great velocity . ... velocity " to the bird , and as atmospheric
friction is the only resistance to such translation , speed of flight is determined
1891.

The American Naturalist

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The Flora of the Olympics

September , 1891. The Problem of the Soaring Birds : I. Lancaster . Fossil Birds
from the Equus Beds of Oregon : R. W. Shufeldt , M. D. An abstract of a
forthcoming work on fossil birds from the Upper Pliocene of the Silver Lake
region , Oregon ...

The Flora of the Olympics

Author: Louis Fourniquet Henderson

Publisher:

ISBN:

Page: 296

View: 806

Journal of comparative zoology

1891. 5. Hft . ) Richet , Ch . , Le travail de l'oiseau pendant le vol . in : Revue
Scientif . T. 48 . No. 22 . p . 684—686 . Tatin , V. ... Baines , A. O. , The Soaring of
Birds . in : Nature , Vol . 44. No. ... Lancaster , J. , The Problem of the Soaring
Birds .

Journal of comparative zoology

Author: Julius Victor Carus

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The Zoological Record

1891 , pp . 273-280 . KENESSEY V. KENESSE , L. Ueber einige seltenere Vögel
des Weissen . burger Comitats . Orn . Jahrb . ii , pp . ... KOTTER , F. ( See
SCHALOW , H. ] LANCASTER , J. The problem of the Soaring Birds . THE
GENERAL ...

The Zoological Record

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View: 502

Indexes the world's zoological and animal science literature, covering all research from biochemistry to veterinary medicine. The database provides a collection of references from over 4,500 international serial publications, plus books, meetings, reviews and other no- serial literature from over 100 countries. It is the oldest continuing database of animal biology, indexing literature published from 1864 to the present. Zoological Record has long been recognized as the "unofficial register" for taxonomy and systematics, but other topics in animal biology are also covered.

Actes

In 1891 he published his work , The Soaring of Birds [ 2 ] . ... In his paper
Joukowsky presented a complete solution of the problem of the bird's gliding in
still air and showed in what way the motion is modified when air moves in
horizontal ...

Actes

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Actes for 5th-11th Congress issued as Collection de travaux de l'Académie internationale d'histoire des sciences, 2-[17].

Railway Locomotives and Cars

In June , 1891 , the quidnuncs in Paris were interested in the rumored success of
some experiments with a flying machine carried on ... M. Ader is a well - known
French electrician , the inventor of a telephone , and has long been interested in
the flyingmachine problem . In 1872 he constructed an artificial bird 26 ft . across
and weighing some 53 lbs . , with beating wings actuated by the muscular force
of ...

Railway Locomotives and Cars

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Birds in Our Lives

Lawrence Hargrave of Australia in 1891 produced what were probably the first
successful models of ornithopters . ... indicated that the two basic requirements
for flight , lift and thrust , could be treated separately with great resultant
simplification of the overall problem . ... It gave the results of his extensive
observations of birds , especially the larger soaring birds , which he had
observed in northern Africa .

Birds in Our Lives

Author: United States Sport Fisheries and Wildlife Bureau

Publisher:

ISBN:

Page: 561

View: 293

Birds in Our Lives

Lawrence Hargrave of Australia in 1891 produced what were probably the first
successful models of ornithopters . ... indicated that the two basic requirements
for flight , lift and thrust , could be treated separately with great resultant
simplification of the overall problem . ... It gave the results of his extensive
observations of birds , especially the larger soaring birds , which he had
observed in northern Africa .

Birds in Our Lives

Author: Ashish Kothari

Publisher:

ISBN:

Page: 292

View: 265

Zoological Record

1891 , pp . 273-280 . KENESSEY V. KENESSE , L. Ueber einige seltenere Vögel
des Weissen . burger Comitats . Orn . Jahrb . ii , pp . ... KUTTER , F. [ See
SCHALOW , H. ] LANCASTER , J. The problem of the Soaring Birds . THE
GENERAL ...

Zoological Record

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View: 797

"Zoological Record is published annually in separate sections. The first of these is Comprehensive Zoology, followed by sections recording a year's literature relating to a Phylum or Class of the Animal Kingdom. The final section contains the new genera and subgenera indexed in the volume." Each section of a volume lists the sections of that volume.

Zoological Record

1891 , pp . 273-280 . KENESSEY V. KENESSE , L. Ueber einige seltenere Vögel
des Weissen . burger Comitats . Orn . Jahrb . ii , pp . ... KUTTER , F. ( See
SCHALOW , H. ] LANCASTER , J. The problem of the Soaring Birds . THE
GENERAL ...

Zoological Record

Author:

Publisher:

ISBN:

Page:

View: 430

"Zoological Record is published annually in separate sections. The first of these is Comprehensive Zoology, followed by sections recording a year's literature relating to a Phylum or Class of the Animal Kingdom. The final section contains the new genera and subgenera indexed in the volume." Each section of a volume lists the sections of that volume.