Abstract

References
1.
Buck
J
, (1962 ) Ann. Rev. Ent.
7 , 27 .
2.
Czopek
J
, (1962 ) Copeia , p 576 .
3.
Dam van
(1938 ) Dissertation. Groningen.
4.
Foxon
G E H
, (1964 ) In: Physiology of the Amphibia. Ed.
Moore
J A
, New York ; p 151 .
5.
Hinton
H E
, (1960 ) Quart. J. micr. Sci.
101 , 313 .
6.
Hughes
G M
, (1963 ) Comparative Physiology of Vertebrate Respiration.
London .
7.
Hughes
G M
, (1966a ) J. exp. Biol. (in press).
8.
Hughes
G M
, (1966b ) In: Ciba Foundation Symposium on Development of the Lung. Eds.
de Reuck
A V S
Porter
R
, London (in press).
9.
Hughes
G M
Grimstone
A V
, (1965 ) Quart. J. micr. Sci.
106 , 343 .
10.
Hughes
G M
Kylstra
J A
, (1964 ) New Scientist
24 , 566 .
11.
Krogh
A
, (1904 ) Skand. Arch. Physiol.
15 , 328 .
12.
Krogh
A
, (1920 ) Pflüg. Arch. ges. Physiol.
179 , 95 .
13.
Rahn
H
, (1966 ) In: Ciba Foundation Symposium on Development of the Lung. Eds.
de Reuck
A V S
Porter
R
, London (in press).
14.
Whitford
W G
Hutchison
V H
, (1963 ) Biol. Bull., Wood's Hole
124 , 344 .
15.
Whitford
W G
Hutchison
V H
, (1965 ) Physiol. Zoöl.
38 , 228 .
