8 



Malė Ibex (Capra Caucasica, 



Guld). 



6858 



7110 



10666 

 5333 



7045 



The average is almost exactly 

 the šame as in my first measure- 

 ments of the blood-discs of this 

 animal. 



Blood from a prick of the ear. 



Female Cashmere Goat (Capra 



Hircus, var.). 



6400 



6665 



8000 

 5333 



6466 



The average is very nearly the 

 šame as in my first measurement 

 of the blood-discs of this animal. 

 See Appendix to Gerber's Ana- 

 tomy, p. 46. 



Blood from a prick of the ear. 



Female Kid, twelve days old, bred 

 between the Ibex and Goat just 

 mentioned. 



8000 



7275 



6000 



5333 



4500 



10666 

 4000 



5918 



Blood from a prick of the ear. 



The preceding measurements 

 confirm my former observations, 

 published in the Proceedings of 

 the Zoological Society, Aug. 9, 

 1842, p. 107,— that the blood- 

 discs of the Ibex are sUghtly 

 smaller than those of the Goat. 



The Kid between these animals 



appears to have generall'y larger 

 and more variously-sized blood- 

 discs than either of the parents. 



The observations were favour- 

 ably made for comparison, because 

 the blood of the three animals 

 was taken and examined from the 

 šame part, on the šame day and 

 hour, and under the šame circum- 

 stances. 



RODENTIA. 



Hackee Sąuirrel (Sciurus Listeri, 

 Ray). 

 4000 

 3800 

 5333 

 3200 



3948 

 Blood from a vein of the ear. 



Quebec Marmot (Jrctomys Em- 



petra, Schreb.). 



3600 



3330 



4570 

 2900 



3503 

 Blood from a prick of the lip. 



Harvest Mouse (Mus messorius, 



Shaw). 



4000 



4570 



6400 

 3200 



4268 

 Thus this little animal, the 

 smallest of the British Mammsdia, 

 has blood-corpuscles larger than 

 those of the horse, as may be seen 

 by comparing the measurements 

 now given with those of the blood- 

 corpuscles of the horse, published 

 in my Appendix to Gerber's Ana- 

 tomy, p. 43 ; and a reference to 

 the dimensions of the blood-cor- 



