538 
Miller and Carlton—The Cat’s Kidney. 
The volume of block III was ‘found to be .2052 cc. The sum 
of the glomeruli was 605—making the exact number between 302 
and 505. 
9.03 cc. -T- .2052 cc. = 44. 
302 X II = 13288 glomeruli. 
505 X .== 22220 glomeruli. 
The average number of glomeruli in an average-sized kidney 
would be, from the above three estimates, from 11738 to 19590. 
The mean would be 15664 glomeruli and to give a round num¬ 
ber we may say that an average-sized cat’s kidney contains 
about 16000 glomeruli. 
Madison , Wis. 
