95 



*PReSe.MTATlON PtHrOD 

 ► LATElVT PrRlOD 



'4 



I Se«dUr\a Tcnrv. 



I Tarwp ZZ'C ZPI^. 



'6 >a Zo ' ZZ. Zf Zb MIMOTES 



Fig. IV. Study of Atena saliva. 



The ventilation of the box is unimportant for tlie short periods reiiuirec! 

 for each studv- A wet sponge placed inside of the box serves to keep the 

 fiir moist. The temi)eratiire of the apparatus can also lie recorded and all 

 tests made under e(iuitoniperatnres. 



Fif{. I. Exiei'iiil View of Apparatus 



