71 Aves. 
Subject Index. — Embryology. 
5815 
Teratogenie der Hiihnerembryonen 
(Russ.) ; Stefanov, 1312. 
Gemme laterali nell’ abbozzo della 
ipofisi di Gallus dom. ; Rossi, 1134. 
Epithelial Structures. 
Early stages in the development of 
scales and feathers ; Schleidt, 1203. 
The development of the pterylosis 
in the Penguins ; Anthony & Gain, 25. 
Entwicklung der orbitalen Driison 
boi Pygoscelis papua ; Ask, 35. 
The embryology of the uropygial 
gland of birds ; Paris, 1013. 
The Skeletal and Muscular 
System. 
On the development of the cervical 
vertebrae and their joints in the chick 
and the bearing of this on the con- 
nection of birds and reptiles ; Wamich, 
1460. 
Embryology of the sacral and 
caudal regions in Gallus ; du Toit, 
1399. 
The embryology of the avian pelvis ; 
Lebedinsky, 771, 772. 
On the development of the skeleton 
of the hind limb in the Penguin ; 
Anthony & Gain, 24. 
Sur l’apparition de la substance 
amorphe et des premiers fibrilles dans 
les tendons ; Laguesse, 745. 
Nervous System and Sense Organs. 
The development of the brain in 
Fringilla canaria ; Boss, 178. 
Histogenesis of the trigeminal nerve 
in the chick ; Bionde, 152. 
Sviluppo delle fibre nervose del 
midollo e delle radici spinali in Gallus 
dom. ; Fragnito, 452. 
Development of the pecten of the 
bird’s eye ; Husen, 644. 
On the origin of the pigment of tho 
cliorioid coat of the eye of the fowl ; 
Busacca, 228, 229. 
Respiratory and Vascular systems. 
Development of the syrinx of the 
common fowl ; Tymms, 1427. 
Abbozzo del sangue o dei vasi in 
blastoderma del Gallus domesticus ; 
Ruffini, 1157. 
Blutbildung in der embryonalen 
Huhnerleber ; Haff, 537. 
Experiments on tho heart of the 
embryo chick ; Levaditi & Muter- 
milch, 780. 
Eine seltene Varietat der A. pul- 
monalis bei einem Hiihner-Embryo ; 
Krassnig, 735. 
On tho early stages in tho dovolop- 
ment of tho thoracio duct in the ohiok 
and on tho formation of blood cells 
in tho walls of that sao ; Miller, 911. 
The development of the thymus in 
the duck and its relations to the 
visceral clefts ; Hamilton, 547. 
On the development of the thymus 
in the Sparrow ( Passer dom.) ; Hel- 
gesson, 576. 
Ursprung der myoiden Elemente der 
Thymus des Huhnerembryos (Russ. & 
deutsch.) ; VasiutoCkin, 1438. 
Histogenesis of the thymus of th© 
chick ; Wassjutotschkin, 1469. 
Reproductive System. 
The origin and histogenesis of th 
gonad cells in the chick ; Firket, 427. 
Spermatogenesis in the duck ; 
Schoneberg, 1216. 
The spermatozoon of tho fowl 
apparently cannot develop outside tho 
yolk ; no mitosis occurs outsido the 
egg ; Loeb & Bancroft, 795. 
Experimental Embryology. 
The effect of X-rays on the bursa 
Fabricii; Jolly, 683. 
On tho influence of the Rontgen 
rays on the developing bursa Fabricii 
and other organs in the chick ; Un- 
zeitig, 1429. 
Teratogenia sperimentale in Gallus 
domesticus ; Staderini, 1304. 
On the loss of weight in the incubating 
egg by the evaporation of water at 
high altitudes ; Aggazzotti, 2. 
Influence de l’air rar6fie sur l’onto- 
gen&se ; Aggazzotti, 3. 
Das Problem der Briitung. Eine ther- 
mobiologische Untersuchung ; Fischer, 
428. 
