puseles of numerous Rodentia de- 

 tailed in the šame work, p. 47-50, 

 vvill show that the corpuscles of 

 the Harvest Mouse are rather 

 smaller than those of any animal 

 yet exainined of this order. 



The blood of the Harvest Mouse 

 ■vvas ohtained from the heart, in 

 one case about twelve, and in 

 another t\venty-six hours after 

 death, in cool -vveather. 1 



For opportunities of examining 

 these animals, I am indebted to 

 the kindness of Mr. Griffith and 

 Mr. Prince. 



Canada Porcupine (Erethizon 



dorsatum, F. Cuv.). 



3555 



3428 



3200 



4572 

 2666 



3380 

 Blood from a prick of the skin 

 of the nose. 



Beaver (Castor Fiber, Linn.). 

 3555 

 3303 



3200 

 3000 



5000 

 2666 



3325 

 Blood from a prick of the nose 

 of a female ahout haIf-grown. 



Marsupiata. 



Kangaroo Rat {Hypsiprymms 



setosus, Ogilby). 



4000 



5333 

 3200 



4000 

 Blood from a prick of the tail. 

 I The corpuscles are slightly 

 smaller than those of many other 

 animals of the šame order, and 

 resemble in size the corpuscles of 

 the Viverrine and Mauge's Dasy- 

 ure. See my measurements of 

 the blood of discs of Marsupiata, 

 Dublin Medical Press, Nov. 27, 

 1840; London and Edin. Phil. 

 Magazine, Dec. Ist, 1840; and 

 Proc. Zool. Soc, June 8, 1841, 

 p. 49. 



AVĖS 



Omnivok^. 

 Blue Jay {Garruhis cr įstatus, 

 VieiU.). 

 L.D. S.D. 



2000 3200 



2900 4800 



1600 3000 



2041 3512 



Blood from a vein of the pinion. 



InSECTIVORjE. 



Rufous Mocking-bird {Orpheus 



rufus). 



L.D. S.D. 



2286 3555 



2900 

 1777 



4800 

 3000 



2231 3646 



Blood from a vein of the wing. 



Gbanivor^. 

 Great Titmouse {Parvs major, 

 Linn.). 

 L.D. S.D. 



2133 4000 



2000 



2900 4800 



1777 3200 



2132 3892 



Blood from a vein of the wing. 



