102 MALL. [Vov. XTX. 
embryo, and especially those of the chorion of many so-called 
“normal” specimens. This will be done, no doubt, in the 
near future. 
EMBRYOS OF THE THIRD WEEK. 
The specimens of the third week can be divided into three 
groups, representing normal embryos 16, 18 and 20 days old, 
respectively. In the first division there is but one specimen, 
TABLE VI. 
NorMAL EMBRYOS OF THE THIRD WEEK. 
| | 
| | z, 
Specimen. | Embryo. | Chorion. % & 
ream 
| | | 
mm. mm. days 
No. 12 oa [5 X, 18 35 4I 
Om SOT een 2h Gay) 42 
His (E) 2.1 S sixes ss 
Eternod 2p te 16.3 
His .(L8). sane 2205 Ree nes 40 
His (SR) 22 9x8 
His (L) 2.4 9x8 
homsonmyaee met Bole nS Be ike) 14 
INGA SEG cite sums otors 2.5 20% tS Kyte 42 
Chiaringt. 22 S220). 2.6 15 x12x8 
His (M) . 2.6 Siaa75 
Graf Spee 2.69 15 0d, 42 
lab} (0018) ogous oc 3 42 
No. 239 3 TO X 17 7S 50 
Janosik 3 Sat 43 
Ipbts, (SYED scanoons Bebe HAUS i0it 48 
No. 164. 3.5 iy) Sati Bie 3H) 
WMossre Oramecerente ges De ROIS 17 
INO. (Sieiesoneis oe 4 24X%16x9 42 
iy Cove df lepers an 4 TAs <0 56 
Ecker. 4 45 
His (III) BOC 4 BO28 OS 51 
lal) (WAS) 65 nisc 06 ¢ 4.2 15 
Steubenrauch (K) Aue 52 
Os TAS) oes Hees 4.3 I7 X14 X10 38 
WiASmer aarti Me 20 
(Pa AOR re 4.5 30 X 30 
Hensen\... 0... 4-5 aI 
ING: 9005s 2 paistcee 4.5 22 X% 20 
INGM20S).. .2c1. ens 4.5 30X23 X15 
