206 
Dr. Wallace oz 
I subjoin a few calculations of the weights of eggs. 
(1.) Aug. 4th. 
fifteen days’ old. 
Various eggs laid 18th—22nd July, i. e. about 
No. of Eggs. Average, 
1 grain A 39 26 39 
2 grains 80 40 
3 110 37 
4 ai 153 38 
4 158 a 39% 
4 oe 156 3 39 
3 ee 195 39 
6 oe 230 383 
These eggs were taken out of a batch of 2, 650; many of them 
were sell some addled; the weighing machine was an ordinary 
one, with glass receptacles, for weighing drugs, requiring to be 
suspended by one hand. This was the first trial made to weigh 
the eggs, and I believe greater nicety was attained subsequently, 
as the result of greater practice. 
(2.) Aug. 30th. Eggs laid 28th, 29th Aug., total 608. 
These were a better specimen, being larger and healthier eggs. 
: No. of Eggs Average. 
1 grain ee 32 ee 32 
2 grains .. 66 54 33 
3 C 101 ae 34 
5 170 oe 3b 
8 oe 272 ote 34: 
10 fe 324 : 324 
(3.) Out of 309 eggs, laid Aug. 29th, oth, weighed on 30th. 
No. of Eggs. Average. 
1 grain ate 27 Ae ht ghtoligs (s 
2grains.. 55 46 274 
3 ES 97 s3 32 
4 34 129 ake 32 
; 5 171 if 34 
6 58 199 sa 33 
7 403 239 ae 34 
8 an 270 ote 34 
9 301 334 
(4.) Eggs all large an fine, laid Oct. 12th—1 8th, weighed 
Oct. 18th. 
No. of Eggs, Average. 
I grain ae Qi Ae 27 
2 grains 55 St 274 
8 8] no 27 
