Effects of Temperature on Tropical Marine Animals. 9 



The most successful experiment was upon Ring A, the wave within which 

 traveled around the ring 70 times per minute at 27.3 C, and gradually 

 declined to 54.5 at 17.5 C, from which temperature it was slowly heated 

 to 39 C, its rate then becoming 173. Then, upon cooling the ring to 

 26.1 C, it pulsated in a normal manner at the rate of 116 per minute, 

 showing no ill effects from the experiment (see Record ia). The obser- 



^j\j\f\f\fyf\f\f\i\fv\fv^j\f\j\f\f\fvf\fKf\^^ 



?6C. 



NTAfA*^ V M \rNr\r\r\rYYYVv^^Ar\rv'VAr\'ArvfyYV>Ar\^^r\r^ 



14'.5 



^r\r\rw^-^r\/- 



26.6 



27 "C. 



28.9 



^'V/^VAAAA/v^AAA/W^.A,/VA.^AA^ 



'w'v/^/w\/^_AywAyv/w\y^-A^' 



30.9 



32.95 



35 .1 



v^AA^AA^AAAA.^AAA.VJJ\AA^,^A/*JWJ\^A^AAAAAr\AA/W 



36.15 



37"9 



as*: 3 



39 



27'8 



26*: IC. 



Record No. i a. 



