Action of certain Reagents upon Coloured Blood- Corpuscles. 129^^ 



DESCRIPTION OF PLATE 1. 



Fig. 1. Effect of pyrogallic acid solution upon the red blood- corpuscles of the newt, 

 2. Effect of gallic acid. 

 ,, 3. Effect of hydrochloric acid. 



4. Effect of oxalic acid. 



5. Effect of carbolic acid. 



6. Various forms assumed by the corpuscles when acted upon by ammonium 



sulphocyanide or potassic sulphocyanide. 



7. Various forms produced by the action of ammonium chromate. 



„ 8. Shows final effect of ammonium sulphocyanide on the nucleus, viz., to reveal 

 an intranuclear plexus. 



VOL. XXSY. 



K 



