336 The Microscope. 



12. Milne-Edwards, H. — Lemons sur la Physiologie et 

 r Anatomie de 1' Homme et des Animaux. 14 vols. Paris, 1857- 

 1880, Says, in Vol . I, p. 62, that only the circular corpuscles form 

 distinct rouleaux. In the corpuscles of all non-mammalian verte- 

 brates, the corpuscles are, in the course of development, at first cir- 

 culai', probably circular in the Camelidse also, p. 48. 



13. Milller, J. — Untersuchungen liber die Eingeweide der 

 Fische. Abhandlungen der Kgl. Akad. der Wissenschaften zu 

 Berlin, 1843, pp. 109-170. In this paper is announced the discovery 

 that the red corpuscles of myxine are, in the adult condition, oval, 

 while the developing corpuscles are circular, p. 119. The state- 

 ment is so important, in consideration of the statements by many 

 comparative anatomists, that it is here given : " Die frische unter- 

 suchten Blutkorperchen der Myxine glutinosa sind elliptisch, platt 

 wie gewohnlich und mit einem rundlichen Nucleus versehen, dessen 

 Oberflache ein granulirtes Ansehen hat. Die jiingeren Blutkorper- 

 chen geben sich durch ihre blassere Farbe und ihren runden 

 Umfang zu erkennen." 



14. Oiven, R. — Comparative Anatomy and Physiology of 

 Vertebrates. 3 vols. London, 1861-1868. In Vol. I, p. 463, he 

 says: "Corpuscles nearly circular in the lamprey and ammocoetes 

 (that is the larva); in myxine they are elliptical." 



15. Parker, W. N. — Elements of the Comparative Anatomy of 

 Vertebrates: adapted from the German of R. Wiedersheim. 

 London, 1886. It is stated that the red corpuscles of aU verte- 

 brates below mammals are bi-convex. The corpuscles of cyclostomes 

 are circular, p. 268. See under 13 for myxine. 



16. Shipley, A. E. — On Some Points in the Development of 

 Petromyzon fiuviatilis. Quarterly Journal of Microscopical 

 Science, Vol. XXVII (1886-7), pp. 325-370. " The blood -corpuscles 

 are of only one kind, large, oval, disc-like structures, with a well 

 marked nucleus," p. 343. 



17. Thompson, UArcy W. — Note on the Blood- Corpuscles of 

 the Cyclostomata. Ann, and Mag. Natural History, Vol. XX (1887), 

 pp. 231-3. Anat. Anz. Bd. II, pp. 630-632. Repeats the state- 

 ment of Shipley that the corpuscles of the larva are oval, and adds: 

 "But the noteworthy point now is, that myxine possesses red 

 corpuscles similar to those, not of the adult, but of the larval 

 lamprey, which in many ways it resembles otherwise." As all 

 observers, except Shipley, find the red corpuscles of lampreys at all 

 ages circular iu outline, any morphological conclusions like the 

 above do not seem of extreme value. 



