142 Book Notices. 
Lescarbault’s alleged observation of March 26, 1859, is contradicted 
by M. Liais, in No. 1248 of the Astronomische Nachrichten. The lat 
ter states that on that day he was observing, with a view of determin- 
ing the relative intensities of the different parts of the dise, at San Do- 
mingos, in the Bay of Rio Janeiro, from 114 4™ to 11h 20™, and from 
difference of longitude, the ingress of the spot should have been at 1 
m : } . 
at St. Domingo. 17™ the spot should accordingly have been 
on the sun’s dise for twelve minutes and would in that time have tray- 
V. BOOK NOTICES, . 
Pror. AGAssiz on THE ORIGIN oF Sprectzs. 
L. Acasstz.—The third volume of this work, now in the press, will ap- 
portance of specific differences among the Acalephs. 
also done much to shake the belief in the real existence of species, but 
the views he advocates are entirely at variance with those I have attempt 
do not exist at all, and are altogether artificial, differing from one another 
only in de ail having originated from a successive differentiation of 8 
Primordial organic form, undergoing successively such changes as W0 
ee, oh 
arate c= 
oor 
se cas 
