400 Reviews and Records in Anatomy and Phystology. 
regard it as an Idea which exists before organization, which last 
as only the language in which the Idea is expressed. ‘The con- 
ditions of this process of fecundation which we have just review- 
ed, will accept no other explanation, say what physiologists may 
about the unphysical character of such a view; we must have 
something beyond mere combination, which lies with physics ; 
this we have in development, which lies with life. 
In conclusion, we may say, that as the domain of science lies 
with demonstrable phenomena, so its legitimate study is with the 
sensible and tangible. ‘The conditions of immaterial agencies, 
and their relations with material forms, must be accepted as pure 
phenomena incapable of the analysis of ordinary scientific facts. 
But after all, how much more of an enigma is the process of 
fecundation than the essence, the primordial cause of everything 
connected with both the inorganic and organic world about us. 
Science should put out her long, tentacular arms in all directions, 
laying hold of the tangible and the sensible, but it should be re- 
‘membered that the supra-sensible is beyond her pale, and that 
“multa esse constant in corpore quorum vim rationemque per- 
spicere nemo nist Qui fecit potest.” 
Il. Mikroscopische Anatomie oder Gewebelehre des Menschen ; von Dr. 
A. Kéuirxer, Professor der Anatomie und Physiologie in Wurtz- 
burg. Zweiter Band: Specielle Gewebelehre. 
Erste Halfte; von der Haut, den Muskeln, Knochen und Nerven, mit 
168 Holzschnitten, ausgefiirht von J. G. Frecen, und vier litho- 
graphirten Tafeln. 
Zweite Hilfte. 1. Abtheilung. Von den Verdauungs-und Respirations- 
rganen. Mit 127 Holzschnitten, ausgefihrt von J. G. PLEGEL. 
8vo, pp. 554, 346. Leipzig, 1850-52. 
The writings of Kélliker already mark an episode in the his- 
tory of physiological science. The department he has chosen, 1S 
Structure, in both its forming and its complete condition. This 1s 
a field which has been made worthy by the presence of most honor- 
able names, who have marked it all over with intersecting lines 
which here and there stretch out beyond the ordinary boundaries, 
it is now so extended that it would, indeed, be meritorious to 
prove a faithful pilgrim in the paths of others in this wide domain. 
The merit and peculiarity of Kdlliker is, that he has proved him- 
self both a pilgrim and a pioneer, and while he has pushed eX- 
ploringly upon hitherto untrodden ground, he has not, like many; 
been ignorant of what others before him have seen and done. 
Of the work before us nothing has appeared like it, since the 
* Allgemeine Anatomie” of Henle, nearly twelve years ago, 2” 
the work of Henle was no more remarkable then, than that of 
Killiker is now. Considering these two works, as we may, 19 4 
