Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Mayhew
1952
Mallard
E 23
Experimental Egg weights at 40% relative humidity.
Day #1 (M) #2 (M) Egg #3 (M) #4 (M) #5 (M)
1 56.7 gms. 63.6 gms. 58.3 gms. 59.5 gms. 66.2 gms.
2
3 56.4 " 62.6 " 57.7 " 58.7 " 65.3 "
4 *
5
6
7
8
9
10 54.7 " 60.6 " 55.7 " 56.5 " 63.0 "
11
12
13 * 53.9 " 59.7 " 54.8 " 55.4 " (infertile)
14
15
16
17 52.5 " 57.9 " 53.4 — 60.3
18 52.2 57.5 53.0 — 59.8
19 *
20
21
22
23
24 49.9 " 54.9 " 50.7 " — 57.3 "
25 * 49.1 (P) 54.6 " 50.2 (P) — 56.9 (P)
26 (hatched)
27 (hatched) 53.4 " (hatched)
(P)= pipped 28 (hatched)
* = day dipped (after weighing) (set 5/17)