tO RAYMOND 
PEARL AND MAYNIE 
TABLE 1—Continued 
R. CURTIS 
z 
hires B22) 8 oi B | i ab 
LOCATION OF EGG IN OVIDUCT | = elie E 4 He Pils Ze 
1 cre B82 oa ga x|" | SR 
& aS ay a< o i < 
rs B 2 E Ss ey 
grams grams grams | 
6. In upper part of isth- 
mus. Membrane com- 
plete, but thin. (Hen 
DA) pea ee Nays ac Meee Ree 16.5 15.5 93.9 | 48.1 
Mean of two previously 
laid eggs of same hen.... 8.75 19.55 | 32.25 165.4 
Ditierences... booc5s. 55s oO es Onna CE) 
7. In upper part of isth- | 
mus. Membrane thin. | 
(HiengS008)ie. heen 0.28 12.57 15.48 123.2 | 49.5 
Mean of the five previously | 
laid eggs of same hen.... 5.54 13.39 31.27 PBB) 15) || 
iiiereuce © | —5.26 | —0.82) —15.79) —110.3 
8. Three cm. below begin- | 
ning of isthmus. Mem- 
brane thin. (Hen 1367).) 0.39 16.12 15.57 96.6 | 56.9 
Mean of nine previously | 
_ laid eggs of same hen... .) 5.40 15.70 27.34 174.1 | 
Difference... 0). .o..2~: | —5.01 | +0.42| —11.77 | —77.5 | 
9. Two em. above caudal 
end of isthmus. (Hen | 
ASG) Westy ak eee 2.0 16.0 13.0 BES") 505 
Mean of two previously | 
laid eggs of same hen... .. 7.0 14.75 25 ste 7456) 
Miflerences 2.6: 2<<.:.. —5.0 +1.25 | —12.75 | —98.3 | 
10. In lower part of isth- | 
mus. (Hen 8010)....... | 0.53 14.04 15.48 109-95) 513 
Mean of eleven previously, 
laid eggs of same hen... . 5.17 L525 oO SOON LONE? 
| Ditference te os. .- hal Se As | Us) | Sy 
11. In lower part of isth- | | 
mus. (Hen8018)........ | 0.58 16.37 20.32 124.1| 56.4 
Mean of four previously 
laid eggs of same hen... .| 6.63 17.42 | 36.05 206.9 
—6.05 | —1.05 | —15.73 | —82.8 | 
. | 
IDitherenc Cymer nee 
es 
5 This is too high a value, probably arising from errors in separation of yolk 
and white. These particular data were taken before the refinement of method 
used in later studies had been worked out. 
