WAX AND COMB CONSTRUCTION 
187 
72), where some of them are even less than a right 
angle, or 90°. 
We took a number of measurements of some of 
the most regularly built combs with an accurate gonio- 
meter, and found that the angles varied several 
degrees. The normal angle which one side makes 
with the adjoining one is 120°, but we found some 
angles to be as large as 130^, while others were as 
small as 110°, even in regular combs. 
All the cells we have described are used for stor- 
ing honey, and frequently those which are specially 
built for this purpose vary considerably in depth. 
