ee. ee 44 3 
New-York Lyceum of Natural History, 387 
26. No diurnal variation of the needle at the equator.— 
M. Arago has, weanberstant, deduced fromM. Duperry’s ob- 
servations on the diurnal variations of the needle, that there 
is no diurnal variation at the earth’s equator. 
27. Increase in the quantity of rain.—M. Flauguergues of 
Viviers, who has for 47 years carefully observed the quan 
tity of rain that fell, has remarked, by taking periods of ten — 
years, that the quantity of rain is continually 1 increasing, and 
also the annual number of rainy and cloudy days, not only at 
‘ _ Viviers. but throughout the south of France. 
Ae 28. Potassium and Sodium.—Mr. Frederick Butz of Nion 
(Canton de Vaud) in Switzerland, manufactures potassium 
and sodium for sale, the pes ee agipeny is L2 per ounce 
and that of sodium L4 per o 
ieee gens ‘Journal, X. p. 494. 
II. Domestic. 
1. American Geological Society.—A copy of the Vindicie 
Geologice of Professor Buckland, forwarded to the Society 
by, ae author, has been received. 
. Porter has presented to the Society, the New-York 
Medic and Philosophical Journal, in chree Volumes octavo 
—also several pamphlets. From the same gentleman, an 
additional — of miaoreees in ess xes, has been re- 
Je 
2. Peotiings of the Lyceum of Natural a7 of New 
(. VIL p. 17 
York; (continued from Ve 
hiss 18 1823,—Mr. A. Halsey rekieae asyn ‘optical view mer 
the Lichens growing in the vicinity of the eity of New 
Vide An 1 - Is of the Lyceum of Natural History of Noweaek. 
—_ ne 23.—Mr. Barnes communicated a supplement to a 
mer paper on the Chitons brought from Peru by Capt. 
Rae of the U. 8. Navy. 
June 30.—The President hantnaced the fact of his having 
received several bones of the Mastodon from Southold, 
Eroligsdeland; nearthe sea. Dr. Akerly communicated draw- 
