EXCHANGE OE COLD-BLOODED ANIMALS. 
7°3 
TABLE — continued. 
u 
t- 

.§§ 
^ 
w^. 
•?.K^ 
5 
u 
Animal 
It 
— - - 
CO, 
Remarks. 
1 Observer. 
- _- 
% •=- 
lB."i 
o 2 
ft 
'° 
'-21 
u 
a 
P. 
■f :; .- 
r 
H 
Pisces — 
Cyprinus aura* 
12-14 
•0376 
•1(411 
•79 
8' 
Fasting. 
Baumert. ' 
tus 
(26-3 c.c.) 
(20-9 c.c.) 
» 
12-14 
•0590 
(413 c.c.) 
•0617 
(31-4 c.c.) 
•76 
11°-12° 
Fasting. Mean of 
three determina- 
tions. 
" 
33-40 
■0655 
■0643 
•71 
12° 
Mean of two deter- 
Jolyet and 
(45-8 c.c.) 
(327 c.c.) 
minations. 
Regnard. 
Cyprinus tin'" . 
'222 
•0796 
(55'7 c.c.) 
•0721 
(367 c.c.) 
•66 
14° 
„ 
500 
•1001 
(70-0 c.c.) 
•> 
Quinquand. - 
190- 
•0165 
•0159 
•70 
5° 
Baumert. 
223 
(11-53 c.c.) 
(8-09 c.c.) 
Cyprinus carpio . 
12 
(1-352 
(179 c.c.) 
13°-14° 
Young. Mean of two 
determinations. 
Pott. 
Colitis fossilis 
43-61 
•0455 
(31-Sc.c.) 
•0633 
(32-2 c.c.) 
1-01 
9°-12° 
Mean of six deter- 
minations. 
Baumert. 
,. 
16 
• j 234 
(86-3 c.c.) 
•1323 
(673 c.c.) 
•78 
17°-22° 
Jolyet and 
Regnard. 
Ma rcena anguiila 
51 
■0580 
(40-5 c.c.) 
•0629 
(32 c.c.) 
•79 
14' 
" 
„ 
112 
(48-0 ccO 
•0566 
(288 c.c.) 
•60 
15° 
" 
Mullus 
28 
•1916 
(134 c.c.) 
•2132 
(108-5 c.c.) 
•81 
14' 
" 
Sparus auratiis . 
75 
•2031 
(142 c.c.) 
•1787 
(90-9 c.c.) 
•64 
W 
" 
Trighi hirwndo . 
350 
•1351 
(94-5 c.c.) 
■1337 
(68 c.c.) 
*71 
15° 
" 
Murcena conger . 
545 
•0855 
(59 8 c c ) 
•0865 
(43 c.c.) 
•72 
13° 
" 
Raja torpedo 
315 
•0672 
(47-0 c.c.) 
•0540 
(27'5 c.c.) 
•58 
14-.V 
Mean of two deter- 
minations. 
" 
Amphibia — 
Axolotl 
42 
•0646 
(45-2 c.c.) 
•0497 
(25-3 c.c.) 
•56 
ll°-5 
Jolyet and 
Regnard. 
Eana escidenta . 
•063 
0-060 
•69 
15-19° 
I Minimal and max- 
Regnault and 
-• 
(44-2 c.c.) 
•105 
(734 c.c.) 
(3076 c.c.) 
0-1134 
(57-7 c.c.) 
•78 
\ imal of five ex- 
periments. 
Reiset. 
»» j» 
(50-46 c.c.) 
(47-98 c.c.) 
0-082 
•95 
17-7 
17° 
Oertmann. 
Schulz. ■'' 
„ temporaria 
13-9 
0-355 
19°-20° 
Pott. 
„ 
0-502 
23°-l 
Mean of twenty-two 
experiments. 
Moleschott. 
» >i 
31-64 
0-038 
13° 
"\ Duration of ex- 
periment was 
- three and four 
Pembrey. 
., 
31-64 
0-035 
13° 
1 hours (winter 
J frog). 
" " 
34 47 
0-033 
12°-5 
Winter frog 
Vernon. 
An examination of the above results shows that the respiratory 
exchange of most of the cold-blooded animals is very small, but that a 
marked exception exists in the case of insects, which have a metabolism 
equal to that of the larger mammals. This remarkable exception finds 
confirmation in the relatively high temperature i of insects and in their 
wonderful muscular activity. 
1 " Chem. Uutersuch. u. d. Respir. d. Schlaminpeitzgers, " Breslau, 1855, S. 24. 
- Compt. rend. Acad. d. sc, Paris, 1873, tome Ixxvi. p. 1141. 
3 Arch. f. d. gcs. Physiol., Bonn, 1877, Bd. xiv. S. 78. 
4 Article "Animal Heat," this Text-book, vol. i. 
