Frog 

 (on the flat) (side view) Bird 



PLATE I. 



Fish Mammal Camel Blood of mammal 



Frog's Corpuscle 

 after addition of water 



Mammalian Mammalian 



after addition of syrup after addition of salt 



1. Red blood-corpuscles. 





v^ U 







Necturus. Nucleus 

 swollen ; nuclear and 

 corpuscular envelope* 

 ruptured. 



I 



85 2. The colourless corpuscles of human blood, x 1000. a, eosinophile cells ; 

 &, finely granular oxyphile cells ; c, hyaline cells ; d, lymphocyte ; 

 e, polymorphouuclear nentrophile cells (Kanthack and Hardy). The 

 magnification is much greater than in 1. 



3. Cover-glass preparation of spinal cord of ox, x 250. 



(Stained with methylqne blue). 

 Dendritic processes 



Bipolar nerve-cells 



+* 



4. Potassium in a, frog's erythrocyte (black) 

 6, nerve (black) ; c, striped muscle (black) 

 d, cartilage cells (yellow) (Macallum). 



Axis-cylinder process 



Geo "Water3ton.iSons,LT.th, Edin . 



