8 REPORT—1858. 
only three septa on the anterior surface, and jive on the posterior surface, as shown 
in fig 1, two of the three septa being doubled at their extremities. Now Leeuwen- 
Fig. 1.—Whale. 
hoek * found in the lens of a whale five septa inclined 72° to each other, which 
doubtless was an abnormal structure, such as that now described, arising either 
from disease or old age. 
In the lens of the Cow, and generally speaking of most quadrupeds, there are three 
septa inclined 120° to each other ; but in the lens of a cow eleven years old, I found 
four septa on one side of the lens and seven on the other, very unsymmetrically dis- 
posed. In the other lens of the same cow there were six septa on each side, also 
unsymmetrically disposed. In both these cases the additional septa are placed at 
the extremities of the ‘iree normal septa. These structures are exhibited in figures 
2 and 3. 
Fig, 2.—Cow. 
Ina Cheviot ewe six years old, both its lenses had three perfectly regular septa in 
their anterior surface. In one of them the only irregularity in the posterior surface 
* Opera, tom. ii. p. 66. Lugd. Batav. 1722. Phil. Trans. vol. xxiv. 1704. No. 23. p. 1723. 
