Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Mayhew
1952
Mallard
E 16
Experimental R.H.
Gibson eggs set 3/29/52
Dipped
75%
6. 78 mm. - 12.1 gms.
o
7. 93 " — 23.4 "
8. 91 " — 22.1 "
9. 60 " — 8.1 " (dead before dipping)
x
10.100 " — 31.9 "
x
(embryo size) 85%
1. 110 mm. - 31.5 gms.
2. 74 " — 16.3 "
3. 91 " — 25.7 "
(14 didn't hatch,
but had embryos)
90%
1. 79 mm. - 19.0 gms.
o
2. 82 " — 16.7 "
3. 96 " — 24.6 "
x
4. 100 " — 27.1 "
x
5. (Rotten, so embryo wasn't weighed-small)
x
6. 96 " — 29.2 "
o
7. 88 " — 20.8 "
8. 83 " — 19.9 "
x
9. 98 " — 29.9 "
o
10.100 " — 28.9 "
x
11. 90 " — 24.1 "