Miscellaneous Bibliography. aoe 
sect on the tree which could have produced such a result.—Acad, 
Sei. Paris, I? Institut, Jan. 10. 
9, Hailstones of salt and sulphide of iron.—Prof. Knxneort, of 
Zurich, states that in a hailstorm, lasting five minutes, on the 20th 
of last August, the stones, some of which weighed twelve grains, 
consisted essentially of common salt, mainly in imperfect cubical 
cr ga He supposes that the salt had been taken up from the 
salt plains of Africa, and brought over the Mediterranean. 
Hailstones containing each a small crystal of sulphide of iron are. 
reported as having fallen recently, by Prof. Eversmann of Kasan. 
The crystals were probably weathered out of some rocks in the 
vicinity — Nature, Jan. 11. 
Temperature of the Su 
cording to Secchi’s calculations, is at least 10,000,000° C.; an 
according to Mr. Sperer’s, 27,000° C.; while Pouillet placed it 
between 1461° and 1761° C. Mr. Vicaire, in a note to the French 
n.—~—The temperature of the sun, ac- 
d 
ble conclusion that the temperature does not exceed 3000° 
(5400° F.). He observes that the greatest heat of the oxyhydro- 
gen blowpipe is 2500° C. (4500° F.), and the highest furnace heat 
not above 2000° C. (3600° F.). 
V. MISCELLANEOUS BIBLIOGRAPHY. 
1. Catalogue of Photographic Illustrations by Wm. H. Jacx- 
90N, sedan to se Suey of the Territories under Dr. F, 
AYDEN, Department of the Interior, Washington, D. C., 
1871.—This catalogue contains the titles of over four hundred 
Rocky Mountain photographs, mostly eight by ten inches in size, 
representing scenery of geological as well as general interest, 
ndian villages, Indians, etc. We have seen eighteen of them 
plementing well the articles by Dr. Hayden in this Journal. by 
their high character, they speak well for the rest in the list. 
They represent lakes and boiling springs, basins and cones, and 
eysers, quiet and in action, and show even the texture of the 
eposits of silica and carbonate of lime which constitute the cones 
and the borders of the basins. They enable the geologist to real- 
ize what kind of deposits springs or chemical depositions make, 
presenting nothing to favor the idea that beds like those of ane 
nary even-grained limestones, however pure and free from fossils, 
are possible results of such action. eee 3 
. Fireside Science. A Series of Popular Scientific nee, 
upon Subjects connected with Hvery-day Life; by er - 
Nicuots, A.M., M.D. New York, 1872. 12mo, pp. 283. ( fu 
& Houghton.)—Dr. Nichols has made a valuable contribution to 
the fireside literature of science in these essays, which ag wed in 
a clear manner many important facts and principles in familiar 
« 
