NUNNELEY, ON THE CRYSTALLINE LENS. 
143 
the first instance from granular disease of conjunctiva at 
the gold-diggings. The sight was quite gone, and the other 
eye painfully involved; the iris adhered to the opaque cor- 
nea, but the lens appeared to be perfectly natural. 
weight, however, was increased to 
Its 
} : 11960 
Coagulation by water at 160° F. mereases the density of the 
lens, thus— 
No. 1, so treated, weighed 11666 
2, ditto, ditto 11739 
CAT. PIG (38 lenses). 
Both lenses exactly alike . 11491 = ; : ; ae 
3. 10864 
BULLOCK (7 lenses). 3)3-2909 
fr 1-107] 
2. 11078 Average 10969 
3. 11114 | HARE AND RABBIT (5 lenses). 
4. 1:1046 | 1. Hare : . 11248 
5. 1J111 | 2. Ditto 11065 
6. TNOSF V3. WhO! 5 11234 
‘i 11079 | 4. Rabbit. 11232 
5. Ditto 11232 
7)7°7596 
5)5°6011 
Average 11085 
Average 11202 
: COMMON FOWL (5 lenses). 
PERE AG lenses): 1. Large cock Eis els | 
Li 1:1143 | 2. Ditto 11366 
2. 11178 | 3. Ditto 10975 
3. VeTLIL. |, 4... Ditto 1:0975 
4. TET76. ) 5.) Hen, 11250 
4) 44.608 5)5°5697 
Average 11152 Average 11189 
COMMON DUCK (4 lenses). 
5. Lens without capsule 11562 | 1. : : . 11600 
6. Ditto 11607 | 2. 11600 
3. ? 10952 
9)2°3169 | 4. ° eeFLOS? 
i" 4.) 4°5204 
oe — Average 11301 
REPTILES. 
I have weighed the lens of the alligator, turtle, chameleon, toad, and 
frog, but as the three former had been in spirit or Goadby’s solution, and, 
from the time of year, I could only procure one small frog and toad, I 
abstain at present from giving the figures, as I am doubtful of their absolute 
accuracy ; but they are sufficiently so as to leave little or no doubt that the 
specific gravity of the lens in these creatures is intermediate between mam- 
malia and fish. 
