CONTENTS. 
XX XI.—Extracts from the Address of Georce BENTHAM, 
Esq., President of the Linnean Society, May 20th, 1870, 
XX XII.—Account of the fall of a Meteoric Stone in Stewart 
county, Georgia; by Josepa E. WILxET, 
XX XII.—Description and Analysis of a Metoric Stone that 
fell in Stewart county, Ga. (Stewart county Meteorite), 
on the 6th of October, 1869; by J. Lawrence Smiru,- 
XXXIV.—-Some practical remarks on the use of Flame Heat 
in the Chemical Laboratory, especially that from burning 
gas without the aid of a blast; by J. LawReNncr Situ, 
XXXV.--On the connection between Terrestrial Tempera- 
ture and Solar Spots; by Crevetanp ABBE, ---------- 
XXXVI-—On a new method of determining Level-error of 
the axis of a meridian instrument ; by C. A. Youne, -- 
XXXVII.—Influence of Temperature on the modulus of 
Elasticity of certain Metals; by F. Kontrausca and 
Francis KE, Loomi@,.2 ols 
XXXVUI—On the Oxy-Calcium Light a as iamntiodd to Phroto- 
Micrography ; by J. J. Woopwarp, -------.--------- 
XXTX.—On the Secular Perturbations of the Planets; by 
BEATA MGR ts ea eee 
XL.—-Farmer’s Theorem discussed ; by Frep. E. Sriupson,_ 
XLI~—Note on Mr. Stimpson’s Paper on Farmer’s Theorem ; 
by B.* Stvameany cs. ees 
XLIT.—On the Determination of the Photometiic Power of 
a rich gas by dilution with a poor gas of known value ; 
the “method of mixtures ;” by B. Sirti an, 
XLUI.—Address of Thomas Henry Huxley, at the meeting 
of the British Association at Liverpool, on the 14th of 
I, IO eet cues ee eee 
XLIV.—The Hail-storm of June 20th, 1870; by Horace C, 
BOVEY SSD a ee ee a es Se 
XLV.—Photograph of a Solar Prominence ; by C. A. Youne, 
XLVI.—Contributions to Zodlogy from the Museum of Yale 
College. No, 8.—Descriptions of some New England 
Nudibranchiata; by A. E. Verriu,.......-222...-.. 
XLVIL-—-On a rosie Earthquake at Bogota, S.A.; by S. A. 
Fivwiiuly Sere es es 
XLVII.——Discovery of a new Planet, the 112th, named Iphi- 
pone; bY 0. HF Pee es 
XLIX.—Geological Explorations in China; by Baron von 
RICHTHOFEN, -- ... 
a ach oh ew ah. aa alee va 
