CONTENTS OF VOLUME X. 
NUMBER LY. 
Page 
Art. I.—Results derived from an examination of the United 
States Weather Maps for 1872, ’73 and ’74, with Plate I; 
rane Loomisyece! 00. cowie &. iL Speed Saag 
= --— = ~~ eee meee we wer rm wr eer re 
IIL—On ot Re ‘of Chlorite after Garnet at the Spurr 
pga Iron Mine, Lake Superior, with Plate II; oe 
Rapaak. PumpEtty, __.-. 22.2... cuit d 
ay. eA plication of the Horizontal Pendulum; by H _ Amory, 21 
V.—Explosive Sel vider of Methyl Nitrate; by M. Carzy tea 22 
VI.—On Zonochlorite and Chlorastrolite ; : by n0.W.Hawes, 24 
VII.—On iiijeooesr and Glycocoll in the muscular tissue of 
___Pecten irradians; by R: H. Currrenpen,._...--. - 20. 
VIII. —Dr. Koch and the Missouri Mastodon; Pikoe Cain i 32 
4 
hae in 1874, with Plates III and IV; by. ke E. VeRRILL, 36 
by Arruur W. Wricar. ._--.- 
ae of two new Asteroids; by C. H. F. Perers, 49 
XII.—Discovery of a method of obtaining Thermographs of 
the Isothenizat. Lines of the Solar Disc; by A. M. Mayzr, 50 
SCIENTIFIC INTELLIGENCE. 
Chemistry and Physics. —On the action of a weaker acid on the Salts of a stronger 
one, HUsBNER and Wiesinger, 51.— end Chloride, BRENKEN: On the 
Paraffin of Pennsylvania Petrol, Mor 52.—Action of vot hued 
chloride on Methyl alcohol, WertH: n Glyceryl ether, Von Zorra, 53.—On 
i ie Aci On a New Method of Testing 
_ Quinidine Sulphate, pond — Mochuairal Equivalent of Feige = Me H. J. 
- Puuus, 55.—Action of M on Goinsler Tubes, M. J. CHauTarp: Effect of 
Electricity of high Siitabtar tn on igual 8, NTE, 56. 
Geology and Natural paver ae ty ial : Subglacier rivers, 57.— 
tin of the U.S. Geological Survey of the Rerslbories 58.—Second Geological 
the period from Sept. 1 to Dec. 31, 1874, GEORGE th fits 
popular sketches of the Topography, Climate and Ge ind of site, 
A. WincHet: Analysis of Aigirite from Arkansas, J. LawRENcE Sm 
Second ; EDWARD 
Appe to Dana’s Mineralogy, S. Dana, 60.—Mine 
Contributions, C. the presence of Vanadium in Rocks: Pseudo- 
morph after crystals of Labradorite from Veresp 
1; their Na a E@stivation in Adiniie, 63.—Sachs’s Text- 
book of Botany: Morphological and Physiological, 64—Zur Abwehr der sehwen- 
dener-bornet’ ntheorie, G. W. KoERBER, 65.— ve t 
An Inquiry Respecting the Reversion of “T bred” Domestic mre 
W. H. Brewer, 67.—Seventh Annual Report on the Noxious, Bene’ 
other Insects of the State of Mis C. V.: Rey, 
onomy. —. Transit of Venus, Dec. 8, 1874, 70.—On the Solar Structure, — 
Farman Secont, 71.—Observations on Magnetic Declination made at the Tre- 
VYandrum and Angustia Observatories, J. A. Broun, 73.—Determination of — SS 
Weights to be given to observations for erage: time with portable e transit o 
instruments, C, A. Scuorr : On the Meteorite of Lancé, K. von DrascHs, 74. ae 
