444 Development and Vascularization of the Testis 
were washed and placed permanently in glycerine. Because of the 
thick and very resistant albuginea a rapid corrosion was more easily 
obtained when the fresh gland was placed for an hour in concentrated 
hydrochloric acid, after which it was treated in the usual way with a 
ten per cent aquous solution of this acid for twenty-four hours, followed 
by the ordinary peptic digestion in the thermostat. 
Gross Development of the Testis——TKeibel in his Normentafel for the 
pig gives the anlages and traces histologically the development of the 
organs, but gives no measurements of these organs. 
TABLE SHOWING IN MILLIMETERS THE LENGTH OF THE Bopy AS COMPARED TO 
THAT OF THE KIDNEY, WOLFFIAN Bopy, AND SEX GLAND OF PIG EMBRYOS. 
The measurements were made from vertex to breech, and include all of the 
embryos in each uterus. In case of asymmetric development of these glands 
in any embryo averages were made of the lengths of both organs. 
ea Kidney?) (0.9 "ae |) eae 
20 2 7.3 1.5 
ray 1 73 1.5 
20 eal 7.4 1.4 
IVETAUIS ls Ata ees cites eet 2D 1.2 7.2 1.5 
22 163 “(eal 1.4 
21 1.0 fies 1.5 
20 1-2 T2 1.5 
(28 2.5 9.0 1.7 
28 2.6 8.0 1.6 
(WiPERUSUZ' 5 Rel aee ee mete eer: 4 29 2.5 8.5 1.7 
27 2.4 9.2 ing, 
28 3.0 7.0 ihe 7/ 
bop PAM 87 1.4 
FSi 3.9 9.2 2 
33 4.0 9.1 2 
WUC Gk oe ¢-culo eas ~ 33 3.8 9.0 2 
3 Ba 9.1 1.9 
33 4.1 8.9 2 
40 5.8 10.0 Sen 
41 5.9 10.0 3.2 
40 5.9 11.0 Sif 
42 5.9 11.0 3.1 
UG erUSR ee Rak ene ees 41 5.8 10.0 3.1 
| 43 6.0 11.2 a2, 
41 5.8 10.5 3e2 
42 5.9 113 3.2 
| 39 5.6 11.5 3.1 
L41 5.9 10.0 3.0 
