93 



October 14, 1845. 



William Yarrell, Esq., Vice-President. in the Chair. 



" On the size of the Red Corpuscles of the Blood in the Vertebrata, 

 ■vvith copious Tables of Measurements." By George GuUiver, Esq., 

 F.R.S. 



, The foUowing Tables contain a synopsis of my former observa- 

 tions*, corrected when necessary and extended by many more since 

 made and now first published. They include altogether no less than 

 485 species, here systematically arranged, so as to exhibit a sum- 

 mary, aad yet more complete vievv than anj"^ yet extant, of the size 

 of the blood-corpuscles in the different subdivisions of vertebrate 

 animals. In this respect I hope the Tables may be useful, as well 

 as for reference in connection ■vvith physiological ąuestions now often 

 arising. I have introduced no measurement not made by myself. 

 The observations on the forra and size of the corpuscles, unless other- 

 ■wise expressed, refer to the majority of them as existing in any por- 

 tion of the blood of the adult animal spoken of ; for there may be a 

 few differing greatly from the average. In the blood-corpuscles of 

 the Oviparous Vertebrata, for example, there are often many grada- 

 tions of form, from the well-marked and prevailing ellipse, to the 

 longer or shorter oval or even circular figure ; and in any mammal 

 some of the corpuscles are a third larger and some a third smaller 

 than the mean size. 



Mammalia 



Various sizes of the corpuscles. — The corpuscles of the Elephant 

 are the largest yet known ; then follow those of the Sloth and of the 



* On the Corpuscles of Marsiipiata, of the Camelidce, and of Moschus Javanicus, 

 Annals Nat. Hist., Uec. 1839, Phil. Mag. šame date, and Dublin Med. Press, Nov.27, 

 1839; on the Blood-Corpuscles of Mammalia and Avės, in an Appendis to the 

 English version of Gerber's Anatomy, 8vo. Lond. 1842 ; on the Nuclei of the Blood- 

 corpuscles of Vertebrata, Note to Dr. "VVillLs's tr. of "VVagner's Physiology, p. 240 

 et seq., 8vo. Lond. 1844, and Phil. Mag., Aug. 1842; on the Pus-like Globules of 

 the Blood, Phil. Mag., Sept. 1842, and Note to Wagner's Physiology, p. 250-252 ; 

 on the Blood-corpuscles of the CamelidcB and of the Mušk Deer, Med. Chir. Trans. 

 v. xxiii. and Lancet, v. ii. 1840-41, p. 101 ; on the Corpuscles of the Snowy Owl 

 and Passenger Pigeon, Proc. Zool. Soc, June 9, 1840 ; Corpuscles of Crocodilidce, 

 ibid. Nov. 10, 1840 ; Corpuscles of Paradoxures, ibid. Nov. 24, 1840 ; Corpuscles 

 of FertB, ibid. May 25, 1841 ; Corpuscles of Marsupials, ibid. June 8, 1841 ; Cor- 

 piiscles of the Įbes and of Ophidian Reptiles, ibid. Aug. 9, 1842; Corpuscles of 

 S(ruthionid(B, ibid. Oct. 11, 1842; Additional Measurements of Blood-corpuscles, 

 ibid. Dec. 13, 1842, Feb. 13 and Sept. 10, 1844 ; Corpuscles of the Stanley Mušk 

 Deer, ibid. May 9, 1843; Corpuscles of the Sloth, ibid. June 11, 1844; ou pe- 

 culiar shapes assumed by the Blood-corpuscles of Mammals, Phil. Mag., Nov. 1840 ; 

 on the Buffy Coat of the Blood, Edin. Med. and Surg. Journ., No. 165. 



No. CLII, — Proceedings of the Zoological Society. 



