The next No. of this Journal will be published on the first of Jan. 

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CONTENTS. 

Ant. XXXIIL On the Tides at Key West, Florida, from observa- 
tions made in connexion with the United States Coast Sur- 
vey; by A. D. Bacue, Superintendent. (With six Plates.) 305 
_ XXXIV. On the Geographical Distribution of Coen by 
James D. Dana, s $14 
| XXXV, Notes on Map Projections by Lieut: FE: B, Hux nt, - 926 
| XXXVI. On the Educational Uses f Museums ; ig EpwarD 
onses, F.R.S., Be 340 
XAKVIL, On the Cause of the ‘oom Borealis by Professor 
LA Rtv. 
oni itt. Nate of ite paliderene masses of Meteoric Iron at 
me ps 
Src of Silver; Copiapite; Owenite ; Xenotime ; 
; Mangano-m magnesian Alum; Apophyllite; ete: 
sae Protosulphure of Iron; Cuban; oe J. Law 
Souts ,M. D., 372 
Correspondence of M. Into: Nicxits—Academy of Sci- 
es, 381.—On the Phenomenon called * Spirit-rappings :” 
Paste icc. chemical action, 382.-—Pyro-electric 
currents: On the electricity produced during the evapora- 
et of salt-water. , 384.—Economical illumination by Electric 


Various Memo 
tallic: Plates: New Greek Fin o 388.—Coupled Canniti, 
3 hy—Heliographic engravi: Collodion : 
“Société d’Encouragement pour PIndustrie Nationale, 390. 
Economical Lamp for obtaining high temperatures, 391.— 
ALi. Observations on the Nomenclature of the metals contained 
ee F loasegeimgia by Prof. A. ee: - 392 
uri 
sierra Compasition of | Clintonite; by Guo. J. 
: Mineralogy; by ihe F. A. Genta, : 410 f 


“SCTE oy iFte INT Be IGENCE. 


