94 
Psyche 
[Vol. 89 
Figure 5. Mounds of the termites species studied; external view and longitudinal 
section: m and n, Armitermes euamignathus; o and p, Cortaritermes silvestri; q 
and r, Orthognathotermes gibberorum. 
measurements were made in one month (April) at the end of the 
rainy season. Some variation in hardness occurs from day-to-day 
and so on any one day of recording, one mound from each of the 
eight species was examined. Ten mounds from each species were 
examined and ten measurements were made from each mound. Care 
was taken to select approximately the same size of mound for the 
ten mounds of any one species. 
The mean values for the hardness of termite mounds in each 
species are shown in Table 5. As the range is large (15.24-0.11 
Newtons/ mm 3 ) the data were transformed (\f~x) and the differences 
