a0 Dana on the Classification of Animals 
of relative repose or simple tremulousness which separates two 
consecutive shocks of moderate intensity. 
s to the velocity of the propagation of shocks, we make no 
definite statement. Notwithstanding the trials of Dr. Julius 
Schmidt, we have no confidence in the results derived from his 
value to science. 
Art. II.—The Classification of Animals based on the principle of 
re by James D. Dana.—No. II. Classification of 
Inse 
THE principles which have been presented in my former ar- 
ticle on the classification of animals may be further exemplified 
subdivisions of the animal kingdom; an = the present time 
take up for this purpose the order of Insec 
The subject may be ABRIPPERY borane by a Aaa 
tion, arranged so as to be convenient for reference, of thos 
the characteristics bearing on on de which are of most BeorTiails 
importance. In connection with the mention below of these 
found on the pages referred to. 
Under each head the characteristic to be looked for in a supe- 
rior group is first mentioned; and then those of related kinds in 
inferior groups. 
2 ss a prea group, (A) a prosthenic eae In an a 
p (B) a metasthenic condition of different grades o 
fits (Bg in a still lower group (0) a Riesintta  niinie. 
e 323 -) 
ese conditions come under the transferent method of ad Bat yg 
which i is exhibited in a transfer of force and function towards e 
(preferent) ps ascending grade, or in the reverse direction Cechearent) 
with descend 
_ This ROET is similar in nature to that which results in amplificate 
@ reverse ; in one direction, the descending, it is outward or 
1 For Article I, see last volume of this Journal, p. 32i. 
A Ske Ne, ea 
