NOTES 119 



NOTES. 



1. Carl Heitzmann, Microscopical morphology of the animal body in health 

 and disease. 8vo. pp., xix, 849. New York, 1885. F. H. Vail and Co. 



2. C. 0. Whitman, The inadequacy of the cell theory. 



3. E. B. Wilson, The cell In development and inheritance. Second edition. 

 New York, igoo. 



4. J. Loeb, Arch, gesamt. Physiol., 1907, Bd. cxviii, s. 7. 



S- Ralph L. Lillie, Certain means by which star-fish eggs naturally resistant 

 to fertilization may be rendered normal and the physiological conditions 

 of this action. Biol. Bulletin, XXII, 328-346, 1911. 



6. A. C. Eycleshymer, The cytoplasmic and nuclear changes in the striated 

 muscle-ceU of Necturus. Amer. Journ. of Anat., Ill, 285-310. 



7. Professor Whitman made extensive experiments concerning heredity in 

 pigeons, and for this purpose he kept a large flock of these birds. At his 

 invitation several students availed themselves of the opportunity to make 

 a careful study of the early development of pigeons. The resulting stud- 

 ies offer us by far the most exact descriptions of the early development of 

 birds which we possess. Compare: 



E. H. Harper, The fertilization and early development of the pigeon's 

 egg. Amer. Journ. Anat., Ill, 349-386, 1904. 



Mary Blount, The early development of the pigeon's egg with especial 

 reference to polyspermy. Journ. of Morphol.,'XK., 1-64, 1909. 



J. Thomas Patterson, GaStrulation in the pigeon's egg. A morpholog- 

 ical and experimental study. Journ. of Morphol., XX, 65-123, 1909. 



8. R. G. Harrison has published many experiments on the origin of nerve 

 fibers: 



1901. Arch.f. mikrosk. Anatomie, Bd. LVII, 354-444. 



1903. Arch. f. mikrosk. Anatomie, Bd. LXIII, 35-149. 



1904. American Journ. of Anatomy, III, 197-220. 



1906. American Journ. of Anatomy, V, 121-131. 



1907. Journal of Experimental Zoology, IV, 239-281. 



1907. Anatomical Record, No. 5. 



1908. Anatomical Record, No. 8. 

 1908. Anatomical Record, II, 385-410. 



1910. Arch. f. Entwicklungsmechanik, XXX., Tl. 11,15-33. 

 1910. The outgrowth of the nerve fiber as a mode of protoplasmic 

 movement. Journ. Exp. Zoology, IX, 787-846. 

 In the last-mentioned article he describes the observations made upon 

 in vitro cultures, and pictures in detail the outgrowth of the axis-cylinders 

 (nerve-fibers) of young nerve cells. Harrison has definitely solved the 

 problem which has long been disputed. 



