CONTENTS OF VOLUME XXV. 
NUMBER CXLV. 
P 
Arr. I.—Contributions to altar a Euias Looms, 
ghteenth paper. (Plate Ee ones papa 0 1 
IL—On Bowlder Drift in Deluna: 18 
I1l—Upon the Electrical Experiments to iccarinthe’ "the 
location of the et in os bias! of the late President 
arfield: and u ssful form of Induction 
Balance for the inuliens defecation of Metallic Midas in 
the Human Body; by ALexanprer Granam Bett, ---- 22 
IV. —A Method for Seobcme the Rate of Tuning-forks ; 
MIRC BOM oC a a eee us 61 
V.—Relations of the Monova Argillites and associated 
ocks at Braintree Rohe phones fy in Massachusetts ; by 
< We Donen: Wh 6 eS i as ee 65 
VL. Observations of ibieg Trane of Venus made at the 
Washburn Observatory, Madison, Wisconsin, 1882, De- ie 
cember 5-6; by E. S. HotpgEn, : 71 
SCIENTIFIC INTELLIGENCE. 
Chemistry a ‘sics.—Improved Apparatus for Gas ges be GEPPERT, 74.— 
~sstniet Apes i. Su ee in Coal Gas, KnusBLAvucn, 75.—Dir ct Formation of 
Zinc Sulphide, Scuwarz: Electromotive — — 6 Ghee 
Siemens’ New bie: of the Sun, M. Faye : ieee pret 
vations upon telluric and atmospheric Shand: ne oe spect, for the study of 
absorption of the Micvaphies Cornu, JANSSEN, 78.—The Hlec Co io. 
Botany and Zoology.—The caupeie Lignitied Snake from Brazil, 79—Flora 
Peoriana, Die Vegetation im Clima von Mittel Tinois, F. BRENDEL, 8L— 
Monograph of the Genus ‘Li um, H. WES, Ford on the — 
Pelagic fauna Peg Freshwater Lakes, 83.—A ast genus ‘of apeeas Rhizopods, 
H. B. Brap 
Astronomy.—Transit of Venus, 84.—Otservations of the Transit of Venus at she = 
Allegheny eet tory, S. P. Laneugy, 85.—Elements of the great . 
1882, E. Frispy, 86. 
Miscellaneous Scient Intelligence.—Science, a new Erp = scientific Journal: 
Report from se M. Museum of Geology and Archwology at rineeton, A. 
Guyor: sid viewing of the Dave —— Academy of t Neto Sciences, 8i.- . 
Obituary.— oN Kopett, 8 
