‘ 
CONTENTS. vil 
NUMBER CLXI, 
e 
Art. XL.—Remarks on Professor Newcomb’s “ Rejoinder ;” ie 
ODL: pie kahit a aie a ea gies Seri kee ee 343 
XLL—An interesting serve of oe and other Min- 
oralss by W. F iipiapeiny ice, tebe eo ia 8 349 
LII.—Notés on American Barchquckes : No. 13; by C. G. 
MOCK WOOD, Ji Wes eerie S ... 358 
XLUIL—Thermometer Exposure; by H. A. Hazen, ---.--.- 365 
XLIV. —Hillocks of angular Gravel and outed Stratifi- 
ation; by ORAMBRRLIN, 0) 20006 fo oa 378 
XLV. ertinet Glaciers of the San Juan Mountains, Colo- 
TANG + Oy Th, Co Sa al ds i eoy 391 
XLVI.—Gender of Names of Varieties; by A. Gray,------ 396 
XLVII.—Secondary Enlargements - Feldspar fragenchtn: in 
certain Keweenawan sandstones ; b ” : ee years 399 
XLVI. — Principal Characters “of American Cretaceous . 
-Saghaee actyls. Part I. The Skull of Prarcanaan by 
. C. Marsa. (With Plate XV), iowawae 423 
SCIENTIFIC INTELLIGENCE. 
Chemistry and Physics. ge a is BeRTHELOT, 403.—On the Hypo- . 
nitrites, Divers and H Ferric ethylate and siauerpe bone hydrate, 
GRIMAUX, 405.—Synt ‘ess “of Piperi ridine and its Hom , 
Vacuum = for fractional Distillations, GODEFROY, “408. —New vege sbrte 
ture-regulator, L. Meyer, 407. 
Geology and anes cecil ogy of the Panther Creek Basin or eastern end of 
“ete Southern field, - A. ASHBURNER, 407,—Geological Survey of Bova Jersey, 
Report for 1883, G. H. Coox, 408.—A ppendages of Trilobites, J. Mic —pearanee 
oP): Watcort, 409.—Glacial Boundary in Ohio, Indiana and Ken , G. 
RIGHT: Report on the Geol nd Natural History of Canada mes 1880 
81-82, A mie and nam Floras of Bri lumbia 
and the Northwest prbdiadl —Bertrandite, a new mineral, DamouR and 
BeRtTRAND: Ti site) in the Blue Ridge Virginia: Meneghinite 
and Tennanite from Canad da, 411.—Materialien zur Mineralogie e Russland, von 
Koxscuarow: Allanite — Topsham, Maine, F. ©. Roprnson: Cu 
descloizite from Mexico, 4 
Botany and her —Bulle' ie of the oa Bogen é of Sciences, 413.— 
arwinism stated by Darwin himse pn Irpoeres : Wild Flowers of Ses 
ioning t 
tions of the Cincin nati Observatory, No. Geo logical Society of Laude: 
Hermann Mueller Fund, 421. 1K Car Monument to eects 422. 
Obituary.—Quixtixo SELLA, 42 
