TABLE OF CONTENTS—ConrTiInvueED. 
Discovery of Oxygen in the Sun by Photography and a new Theory 
of the Solar Spectrum. By Heury Draper, M.D. (with a photo- 
EB TapPlt MIALO) aw csmcesed's oseyeretecn ateieiw cs levee opal whal ain) -Setal musta iclah eae SOD 
Note on the Exactitude of the French Normal Fork. By R. Konig. 
On a new Species of Adocide from the Tertiary of Georgia. By #. 
DD COBO! o ae xu Sage bs &: Lage ae edge alae spares tae ates Bie ean ee eefasets te eee 
Tenth Contribution to the Herpetology of Tropical America. By #. 
DE COMEE Ro oligsae syoraneguieae Bien eis ni aie Parag ae, Se seo 
Further Illustrations of Central Force.’ By P. H. Chase...>......- 
On some Tellurium and Vanadium Minerals. By F&. A. Genth...... 
The Flow of Water Through an Opening in a Pierced Plate. By &. 
BPD DS Nae o ores wc rateoepanpare wr Injecte ars Se’ ays 0s parm ota Bur ezeh ore oe at anno 
Description of the Wilcox Spouting Water-well. By C. A. Ashburner 
Level Notes of Oil Pipe Line to Baltimore. By H. Hauwpt......... 
List of Elevations across Indiana County, Pa. By ©. Burrett, Jr... 
Obituary Notice of John C. Cresson By Frederick Fraley........- 
On Land Plants lately discovered in the Silurian Rocks of the United 
States. By ZL. Lesquereux (with a plate). ..........-. cece reece 
On a Species of Fungus Discovered in Coal Shales. By L.*Lesquereux 
On New Reptiles and Fishes of the Cretaceous No. 3 of Kansas. By 
Jip Oe COV a anmenccb> SoD ab Goa 1b SD USO GboUa UNS oSocDbe OF wie 
Description of Extinct Vertebrata from the Permian and Triassic of 
the United, States: (By se) D Cope. sa se nc.-0 cle eset a sore 
On Reptilian Remains from the Dakota Beds of Colorado. By £. D. 
Sylviculture: “By Blt 2 Price <3... ss scp o) 4 0 din olan Waser eae Ee 
On the Causes of the Huron Disaster. By W. Blastus...........-- 
On Bituminous Material from Pulaski County, Va. By Dr. @. M. 
GLEN ENE eR Ona ah ca Nec E | anano Meo qoLTAD USO oe 
On a New Method for the Decomposition of Chromic Iron. By Z. F. 
MUERTE 55 iowa plat ob 5 ia aw bat om i aN eae wae elo NE oP Ne a On 
Descriptions of New Vertebrata from the Upper Tertiary of the West. 
By E. D. Cope...cceseccce veces e cece cect ence ee en eet eneeaeens 
On some Saurians, found by Mr. Charles M. Wheatley in the Triassic 
of Pennsylvania. By H. D. Copeé......-cccee cece eceecstecesces 
On the Vertebrata of the Dakota Epoch of Colorado. By #. D. Cope. 
On the Paleozoic Rocks of Lehigh and Northampton Counties in 
Pennsylvania: “By. Prine, Joes se sion 0 ovale oie renee 
Remarksvon the Preceding: By aPs Hirdeery Jt eccrine eine setetexe stan 
On Crystallography in Sculpture. By P. Prager, Jr... .....0.ee.ees 
On a Series of Chemical Analyses of Magnesian Limestone Beds, 
made by Mr. Joseph Hartshorne, at Harrisburg, Pa. By J. P. 
TBMOY cd atabar eae se wae a0a.o 4 siphale. ele © are jars ni Gheierelagala sey eienye neve ete een 
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