90 AMERICAN MUSEUM OF NATURAL HISTORY 
Beard, J. 
On the early development of 
Lepidosteus osseus. Proc. Roy. Soe. 
London, 1889, 46, 108-118. Abstract in 
Journ. Roy. Micr. Soc. London, 1889, 
622-626. 1889.3 
Some annelidan affinities in the 
ontogeny of the nervous system of ver- 
tebrates. Nature, 1889, 39, 259-261. 
fig. 1889.4 
On the inter-relationships of the 
Ichthyopsida; a contribution to the 
morphology of vertebrates. Anat. Anz., 
1890, 5, 146-159; 179-188. 1890.1 
Prof. Rabl and the mode of de- 
velopment of the vertebrate peripheral 
nervous system. Anat. Anz., 1890, 5, 
125-128. 1890.2 
The histogenesis of ganglion-cells 
and nerves. Anat. Anz., 1892, 7, 290— 
302. 1892.1 
The transient ganglion cells and 
their nerves in Raja batis. Anat. Anz., 
1892, 7, 191-206. 8 figs. 1892.2 
Hermaphroditism of lampreys. 
Journ. Roy. Micr. Soc. London, 1893, pt. 
2, 156. 1893.1 
Notes on lampreys and _hags. 
Rept. Brit. Assoc. Ady. Sci. 1892 (1893), 
789-790. — Anat. Anz., 8, 59-60. 
1893.2 
The development and probable 
function of the thymus. Anat. Anz., 
1895, 9, 476-486; 10, 272. 1895.1 
The pronephros of Lepidosteus 
Anat. Anz., 1895, 10, 198-201. 
1895.2 
The history of a transient nerv- 
ous apparatus in certain Ichthyopsida. 
An account of the development and de- 
generation of ganglion-cells and nerve 
fibres. Zool. Jahrb., 1896, 9 (Morph. 
Abth.), 319-426. 8 pls. 1896.1 
OSSEUS. 
On certain problems of verte- 
brate embryology. Jena, 1896. 78 p. 
8°. Abstract in Journ. Roy. Micr. Soe. 
London, 1897, pt. 2, 109. — Nat. Sci., 
1897, 10, 5-7. 1896.2 
——On the disappearance of the 
transient nervous apparatus in the se- 
ries: Seyllium, Acanthias, Mustelus and 
Torpedo. Anat. Anz., 1896, 12, 371-374. 
1896.3 
Transient nervous system in 
skate. Journ. Roy. Micr. Soc. London, 
1896, pt. 5, 496-497. 1896.4 
BEA 
The yolk-sac, yolk and merocy- 
tes, in Secyllium and Lepidosteus. Anat. 
Anz., 1896, 12, 334-347. Abstract in 
Journ. Roy. Micr. Soc. London, pt. 6, 
603-604. 1896.5 
tAlternation of generations in 
vertebrates} Nat. Sci., 1897, 10, 5-7. 
1897.1 
Abstract of the author’s article: On certain 
problems of vertebrate embryology, 1896. 
Further remarks on the phe- 
nomena of reproduction in animals and 
plants. Anat. Anz., 1897, 11, 634-641. 
1897.2 
The source of leucocytes and the 
true function of the thymus. Anat. 
Anz., 1900, 18, 550-560. 1900.1 
The morphological continuity of 
the germ-cells in Raja batis. Veterina- 
rian, 1901, 74, 300-318. — Anat. Anz., 
18, 465-485. — Journ. Roy. Mier. Soe. 
London, 1901, 504-505. 1901.1 
A thymus-element of the spir- 
acle in Raia. Anat. Anz., 1900, 18, 
359-363. figs. Abstract in Journ. Roy. 
Micr. Soc. London, 1901, pt. 1, 17. 
1900.2 
The determination of sex in an- 
imal development. Anat. Anz., 1902, 
20, 556-561. — Zool. Jahrb., 16, 703— 
764. 3 figs. 1902.1 
The germ-cells of Pristiurus. 
Anat. Anz., 1902, 21, 50-61. 1902.2 
The germ cells. (1) Raja batis. 
Zool. Jahrb., 1902, 16, 615-702. 2 pls. 
& 3 figs. 1902.3 
Heredity and the epicycle of the 
germ-cells. Biol. Centralbl., 1902, 22, 
321-328; 353-360; 398-408. 3 figs. 
1902.4 
The origin and histogenesis of the 
thymus in Raja batis. Zool. Jahrb., 
1902, 17, 403-480. 6 pls. & 8 figs. 
1902.5 
The germ-cells. Journ. Anat. 
Phys. London, 1903-04, 38, 82-102; 
205-232; 341-359. 2 pls. 1903.1 
A morphological continuity of 
germ-cells as the basis of heredity and 
variation. Rev. Neurol. Psychiatry 
Edinburgh, 1904, 2, 1-34; 114-142; 
185-217. 2 pls. & 5 figs. 1904.1 
Beardslee, Lester. The game and 
fish of Alaska. Forest & Stream, 1879, 
13, 723-724. 1879.1 
