284 Scientific Intelligence. 
tically, eight inches. Across the grinding surface, four inches. The 
smaller molars are about eight inches, and five inche es in the same direc- 
of these double plates were counted; in the smaller, fourteen 
tance between the se oxy the interval between me pairs, is about 
one-fourth of an i crak resemble so cis al nave seen of 
: indrical columns of ename were distinct, and where also the gradual 
coalescing of three of these into one, could be as perceived. 
Indiana State University, Bloomington, August 1st, 185 
2. iption of Mauna Loa, Sandwich Islands ; oe information in 
a letter t o J.D. Dawa from Prof. R. C. Haskett, Oahu College, dated 
Kona, Hawaii, June 22d, 1859) uke one just returned from a second visit 
to the scene of the lava-flood on Mauna Loa. There is one fact which I 
Below this point there is a stream, now co C , & Tew rods 
width. In this flow therefore there is no doubt that there is a Rae 8a 
crack in the side of the mountain for four miles. ow much farther 
this crack extends down the mountain cannot be fk now at least, 
for the craters are still sending forth immense columns of sulphurous va- 
bowe and the stream of lava is still flowing below them. This stream 
seh is much smaller than it was in February, and is entirely subter- 
n for the first twenty-five or thirty miles, except that there are a lew 
ficlat cahahe the running lava can be seen. In some instances this st 
is as much as forty feet below the surface. During this trip I went to 
the top wh ao Loa. There is no perceptible action in the crater of 
Mokuaw The source * the present flow is probably about 11, 000 
feet pase the level rt the se 
3. Observations on the Ossi siferous Caves near Palermo; by Dr. Fat 
coner, (Proc. Geol. ae London, Atheneum, roid 16, 1859, p- 86).—Dr. 
Falconer, in the first place, adverted to his previ us communication, T 
on the 4th of May last, before his collections na aftived 3 in England. In 
the present paper he submitted, with more pots explanations, the ma- 
terials on Pst ole his first statements were founded. Dr. Falconer aa 
ysical sot Mts hy of that portion of the northern coast © 
2 bic the aad sioia ienie; namely, apg toep on 
sot Tapas on te ma Along the Bay of Palermo, and 
er eee 
