Viii ' CONTENTS. 
nomena of the Polarization of the Atmosphere, by Sir D. Brewster, 400.—O1 
r. C 
present State of our Pmsgees of the Chemical Action of the 
purifying agents, by Dr. pores: 409.—On the Air and Water in ws 
and the action of Porous Strata on Water and Organic Matter, by Dr. R 
Surrx, 411.—On the Pronto: of Phosphoric Acid in some Natural iy 
by Prof. VoELcKER, 412.:—The Phosphorescence of Potassium; by Mr. W. 
Petriz: On the presence of Fluorine in Blood and Milk, by Dr. G. ivi 
413.—Another New Planet: Supposed Staurotide of Norwich, Mass.: General 
Index: Errata, 414. 
General Index of Vols. I—X, Second Series, 415. _ 
APPENDIX. 
‘cet on Prof. Page’s Electro-magnetic Engine; by Professor Ware. 
TER R. Jonnson, 473. : 
ERRATA. 
© 39, line 13 from bottom, for “‘ Joun Cisate. MD read: lous Gor 
aD.” 
myo. ix, Pp- ts, ring line from bottom; for™* B csrgecn read “ carburets. # 
“» 4 - 7 zinc,” read “ lime,” 
“6 «339° 3d. - read we, "aad at top of next pages 
for 3: 2,7 aa 2: 1, and for - oneal Hin 8 Ai ea sam 
Vol. ix, p. 422, 5th line from top, for * volume,” toed “4 he aang 
at. 409, oe fine from top, apr. eae 72 and fies 
eS ae or ¢ oxene,” 
‘pyr 
Vo. x, p- 138, and Secick, for Souyet, read Louyet. 
