NEST VOLUME (cm 3 ) 
240 
Psyche 
[Vol. 87 
Figure 4. The relationship between nest weight and volume in N. corniger. The 
equation of the first principal axis (based on correlation analysis) is given. The 
correlation coefficient (r) is highly significant (p < 0.001). The 95% confidence limits 
on the slope of the principal axis are Li = 1976.84; L 2 = 2218.26. 
