vi CONTENTS. 
Botany.—Nomenclature, 278.—Annales Musei Botanici edidit F. A 
Guit. Miquet, 281.——Martivs, Flora Brasiliensis, 283-—Species Genera et Onkwte 
Algarum, auctore Jacoso Georcio AGARDH: Phycologia Avatralicn; 3a History of Aus. 
Botanical sgt for the year 1863--Professor Martin Martens: Dr. Christian von 
Steven: Pru H. B. Alfred Moquin-Tandon: Francis Boott, M.D., 283.—Jacques 
Gay, 292, 
Astronomy.—-Comet IV, 1863, 292—Comet V, 1863: Comet VI, 1863, 293.—Letter from 
Prof. James C. Watson on the discovery of Comet VI: Notes on n Be on by F. An- 
Bott, Esq , 294, 
Miscellaneous Scientific Intelligence-—Account of the easting of a gigantic (Rodman) Gun 
at Fort Pitt Foundry, 2 
Bock einesing> Outlines of a Dictionary of the Solubilities of Chemical Substances, 
By Fraxkx EH. Srorer, 301.—Chambers’ Encyclopedia: A Practical Handbook of 
Medical Pi Bi ; by Joun E. Bowman, F.C.8.: Dana’s Manual of Geology, 392. 
Obituary. —Edward Hitchcock, 302.—Giovanna Plana: Heinrich Rose: Cappocei, 304. 
NUMBER CXIl. 
Agr. XXVII. On the Diptera or two-winged Insects of the Amber- : 
fauna, (Ueber die Diptern-fauna des Bernsteins) : a lecture 
id Director Lew, at the meeting of the German naturalists 
n Keenigsberg, in 1861, . : 
XXVIIL Abstract of Prof. Meissner’s Gress kek on Oxygen, 
Ozone, and Antozone; by S. W. Jounson,~ - 
XXIX. Glacial Action about Penobscot ak ; ey Me. Sou 
e Laski, - 339 
XXX. Contributions ait the ‘Sheffield Vilchus of Yale Col. 
lege. No. VII.—On the Indirect Determination of Potash 
and Soda; by Peter Cottier, B.A., 
XXXI. Contributions to Chemistry from the reboaiy of iis 
wrence Scientific School; by Wo.cotr Gisgs, M.D.— 
1. On the relations of hyposulphite of soda to certain metallic 
oxyds.—2. On the determination of nitrogen by weight.— 
3. On the separation of cerium from didymium and lantha- 
num.—4. On the separation and estimation of cerium.—5. 
On the quantitative separation of cerium from yttrium, alu- 
minum, glucinum, manganese, iron and uranium.—6. 
the employment of — of fluorid of potassium in 
analysis, - i. 346 
