J. D. Dana on Cephalization. 3 
of resemblance to the latter tribes, independently of any sthenic 
value attached to this character. 
tion in the lineal order in which they are presented on the 
printed page, the tribes of Hemipters and Homopters stand far 
apart, as if remote in the system of Insects. But making the 
9. Ou the 
against “ the arithmetical monomania, which is perpetually seek: 
Chemical combinations, crystals, light, heat, 'y, all pro 
that there are simple numerical relations in the very constitu- 
ion, and in all the movements, r : 
titudinous leaves of the forests are in mathematic 
48 not therefore a priori absurd that regular numbers 
preside to some extent throughout the wide system 
of Nature's 
