440 SAMUEL C. PALMER 
Cour, A. H. 1902 The technique of biological projection and anesthesia of ani- 
mals. VIII. The anesthesia of animals.. Jour. Applied Micr. and 
Labr. Methods, vol. 5, no. 11, pp. 2051-2053. 
Corr, E. D. 1889 The Batrachia of North America. Bull. U. S. Nat. Mus., 
no. 34, 525 pp., 81 pl. 
Donawpson, H. H. and Botron, J. L. 1891 The size of several cranial nerves 
in man as indicated by the areas of their cross-sections. Amer. Jour. 
Psychol., vol. 4, no. 2, pp. 224-229. 
Dunn, E. H. 1900 The number and size of the nerve fibers innervating the skin 
and muscles of the thigh in the frog (Rana virescens brachycephala). 
Jour. Comp. Neur., vol. 10, no. 2, pp. 218-242. 
Epincer, L. 1892 Untersuchungen iiber die vergleichende Anatomie des 
Gehirns. II. Das Zwischenhirn. Erster Thiel:—Das Zwischenhirn 
der Selachier und der Amphibien. Abhandl. Senckenberg. Gesellsch., 
Bd. 18, Taf. 1-5, pp. 3-55. 
Foster, M. 1891 Text-book of physiology. London, MacMillan and Company, 
8°, part 3, xxi + 418 pp. 
Franz, V. 1905 Zur Anatomie, Histologie, und funktionellen Gestaltung des 
Selachierauges. Jena. Zeit. f. Naturwiss., Bd. 40, Heft 4, pp. 697- 
840, Taf. 29, 32 Fig. 
Franz, V. 1909 Das Vogelauge. Zool. Jahrb., Abt. f. Anat. u. Ont., Bd. 28, 
Heft. 1, pp. 73-294, Taf. 6-10, 122 Fig. 
Greerr, R. 1900 Die mikroskopische Anatomie der Netzhaut. Graefe-Saem- 
isch, Handbuch der gesamten Augenheilk., Teil 1, Bd. 1, Kap. 5, pp. 
(A=2125 Tals 152: 
Harar, 8. 1902 Number and size of spinal ganglion cells and dorsal root fibers 
in white rats of different ages. Jour. Comp. Neur., vol. 12, no. 2, pp. 
107-124. 
1903 On the increase in the number of medullated nerve fibers in the 
ventral roots of the spinal nerves of the growing white rat. Jour. 
Comp. Neur., vol. 13, no. 3, pp. 177-183. 
Hess, C. 1905 Beitriige zur Physiologie und Anatomie der Cephalopodenauges. 
Arch. f. ges. Physiol., Bd. 109, pp. 393-439, Taf. 5-8. 
Hesse, R. 1900 Untersuchungen iiber die Organe der Lichtempfindung bei nie- 
deren Thieren. VI. Die Augen einiger Mollusken. Zeit. f. wiss. Zool., 
Bd. 68, pp. 379-477, Taf. 25-32, 1 Fig. 
His, W. 1890 Histogenese und Zusammenhang der Nerven-elemente. Arch. 
f. Anat. u. Physiol., Anat. Abth., Suppl. Bd., 1890, pp. 95-117. 
Howarp, A. D. 1908 The visual cells in vertebrates, chiefly in Necturus macu- 
losus. Jour. Morph., vol. 19, no. 3, pp. 561-631, pls. 1-5. 
Huuke, J. W. 1867 On the retina of amphibians and reptiles. Jour. Anat. 
and Physiol., vol. 1, pp. 94-106. 
Kinassury, B. F. 1895 On the brain of Necturus maculosus. Jour. Comp. 
Neur., vol. 5, pp. 189-205, pls. 9-11. 
Krause, W. 1876 Handbuch der menschlichen Anatomie. Hannover, Bd. 1, 
8°, xiii + 581 pp., 302 Fig. 
1880 Ueber die Fasern des Sehnerven. Arch. f. Ophthalmol., Bd. 
26, Heft 2, pp. 102-108, Taf. 1. 
