oF aided 
eye 
od a 3 iit * 
. CONTENTS. Vv 
Page. 
Vz Foci of Parabolas; by Prof. Gzorce WaTeErmAN, Jr., 200 
VI. Abstract ofa Meteorological Journal, for the year 1845, kept 
at ee, ne by S. P. Hitprern, M. 
Vil. igen on the Eocene Siete of the Didited States, 
‘ Biotriptions of species of Shells, &c. epourring in it; 
me. A. Conrap,—(with two plates,) 
Vil. <e account of the oe of Harpeth Ridge, Davidson 
oy County, Tenn. ; b OOMIS, - 222 
___-IX. Notice of some Genera of Cyclopac cea ; By Ai D. Dana, - 225 
~X. On the Law of Electric Conduction in Metals ; : by JONAEEER 
230 
oo 
ee . Lane, 
XI. Axial Gahiakerhwers ; by Piof, Chane G. Pace, M. D., - 242 
 - XII. Remarks on some Fossil Bones recently brought to New Or- 
~ “gory Tennessee and from eon, : by font pid apr9 M. 
= 
Car r, M. D., 
XII. tay th Vestiges of Croslion: - - - - 250 
SCIENTIFIC esc abe 
ee 
Che mates —On the Chemical ee sade ba # the ope - the Solar Rays, 
or Actino-Chemistry, by ffect of Cold on aol Affinities 
of Substances: Electric sonia? preduced b by the Vibration of Wires and Me- 
tallic Rods, by W. Suuuiv ay —Discovery of some new Earths i in iy, ea 
by L. Svanzerc: A new fasllbed ok obisivi ing Chlorine, by R. OxLanp, 297.— 
: hg ’ OF | 
lies on the Vegetable Bases when Tartaric eid is is et y C. OpPERMANN : 
na new method of forming Chloral, by M. Stapier: Quantitativ ve determina 
i Adin 
. oR: : v 
of Diaphanous Quartz and whi Rare by M. Exetman, 261: Test for Man- 
: Valer ec Acid: Atomic weight of Uranium: Eu- 
diometry: Detection ~ Sag By Physio ological Test s, 262. —Urinary Calculus: 
On the Milk of Carni ra,yby M. Dumas, es Campynnion of the Urine of 
Herbivorous Aitente: * M. ee aisaacns. Researches on the Composition 
= is ae ean Be ae 
n 
tion of Water b 
Acid or any mae, da Ro, agent, by J. L, sling ge aD. 
Mineralogy and Geology.—Chloanthite, a new Binarsentet of Nickel, by A.B 
THAUPT: Cuban of Breithaupt: Kyr rosite of Breithaupt: Turquois in Silesia, 
266.—Crystalline form of Geocronite: Piauzi ~ a new mineral: Dysclasite 
Columbite and Wolfram: Trichroism of Crystals: Phospho ring ates Bare Dia- 
mond, prints in Coal Rocks of Westno raised Coun a., by 
T. Kine: The M st 0 rg, N. in Angi, 1845, 
.—Missouri and ississippi Valleys, “270. Beh meek, pie s of Scandi- 
navia, 271.—Lines of Ancient L abs of the Sea ae Finmark ty . A. Bravais, 
273.—Supposed Birds’ Bones of the Wealde 4.—Bones of the Tguanodon 
and other colossal pany eee rst nd in ibe lus of Wight, England, 275.— 
Notice of what appears to be the Embryo of an Ichthyosaurns in the Pelvic cavity 
of Ichthyosaurus com nituhe ?) by J. Cyanine Pearce, ge or 
Scratches in Nort ales, by A. F. Macinrosu: Phosphorite Rocks f Estre- 
ura, Spain, a good snterial for manure, 277.—Fresh-water Formation of 
