1916 



Shelf ord; on Physiological Differences 



163 



Table 2. Shoicing the relative resistance of shrimps of the same and 



different species from differenth depths to high temperature. 



(P. Records by Miss Perry at Friday Harbor; 



R. by Rathbun [21].) 



*Green, from eelgrass, Station B. 



**Red, from red algae, Station C. 



***From Station A. 



****Mlxed. 



*****Indeflnite. 



******A single specimen, from this depth, small, juvenile, on basis of size 

 and age should have died first. 



