702 
The Philippine Journal of Science 
1921 
Left kidney. 
Ages. 
Right kidney. 
Fig. 3. Dimensions of the kidneys of males in relation to age. 
In females there is also an increase in size up to the age of 
30 and a very slow diminution up to the age of 80, with a 
secondary increase beyond that time. 
SUMMARY 
Briefly, my findings may be summarized as follows: 
1. The kidneys were in general at higher levels in males than 
in females. 
2. The variability of the horizontal planes of both kidneys 
was greater in males than in females. 
