160 Miscellaneous Intelligence. 
brate limbs; by S. I. Smith, on the early stages of emcees tal- 
poida ; by J. Willard Gibbs, on the equilibrium of heterogeneous 
substances, this last paper occupying 220 pages of the number. 
Mr. Thacher closes his excellent paper—the Masel on verte- 
brate limbs—with the following addendum 
Since the views expressed in the foregoing pages were est 
my own mind six or eight months ago, I had looked for con- 
Griiation of them in the brilliant investigations of Balfour on the 
development of - lasmobranchs. The preliminary acco how- 
ever, in the Journal of Microscopical Science, somtaiodl raiehet 
and Physiology I have been able to obtain only irregularly. 
Immediately after the last proof of the preceding pages had been 
received, the number of that Journal for October, 1876, came into 
my hands. Here Balfour devotes three or four pages to the limbs. 
He says: “If the account just given of the development of the 
limb is an accurate record of what really takes place, it is not 
possible to deny that some light is thrown by it upon the first 
origin of the vertebrate limbs. The fact can only eae one inter- 
pr etation, viz: that the limbs ure the remnants of continuous lat- 
eral 
The cia of the limbs is almost identically similar to 
that of the dorsal fins.” He goes on to state that while none o 
his researches throw any light on the nature of the skeletal parts 
7 
fins y observations on adult forms, aud a coaice aF 
on the iano Balfour comes to the same results from embryo- 
logical investigations, in that group rome which on — 
aper - Wiede 
view P cuipaesag the ole i nature of the centrale. This had pre- 
Ur 
tarsus. This is a eae important confirmation of the chiroptery- 
gium, and relieves us of suspicions with regard to its correctness 
brs we push our inquiries into earlier history and more simple 
rms, 
In ete ree number of the Jahrbuch is a paper by Gegeabers, 
rehipterygium theory. He modifies his explanation 
the Stapediferal limb to accord with Huxley view of the eid 
* Morph. Jahrb., Bd. ii, Heft. Fe R. Wiedersheim, Die altesten Formen des 
Carpus und Tarsus der heuliver's mphibien. 
+ C. Gegenbaur, Zur Morphologie der Gliedmaassen der Wirbelthiere. 
