CONTENTS. v 
Page 
On Oxymuriate of Lime. By Thomas Thomson, M.D. F.RS......... 182 
On the Reduction of Lunar Distances for finding the Longitude. By Dr. 
ETE AS aS eR Be Gl ld ae ee a Al Ae lin ie Sh rae tc 185 
Mathematical Problems. By James Adams, Esq..... 00.0. ceesssceseee 188 
On the Maxima and Minima of Quantities. By Mr. Thomas Slee...... 193 
On the Influence of the Time of the Day upon Barometrical Measure- 
MEMES. sy Win DlCHOS tes wate cist e cclciee tetoa anes seh adeceones 197 
Experiments on the Strength of Cast-Iron Shafts in Machinery.,....- +++ 200 
On Capt. Cook’s Account of the Tides in the Endeavour River ......+.+- 203 
Meteorological Journal kept at Penzance, for 1818. By Dr. Forbes .... 207 
_ Critical and Analytical Account of the Philosophical Transactions of the 
Royal Society of London, for 1818. Part I]. ......2.eeeeeeee eens Jae 208 
Proceedings of the Royal Society, Jan. 21, 28, Feb. 4, 11, and 18.... 218 
Linnzan Society, Jan. 26, Feb. 2, and 16.......... 221 
Geological Society, Dec. 18, and Jan. 1........ .» ibid. 
meneame e Gat Wield. ¢ 2.2.5 Stcssshececee cnease J Gee ce oeasie tans eee 
Melting Points of Bismuth, Tin, and ad RRP late se Melote deta ts ete Sp bec Soo 
Japan Copper........... Noodacdodade Meese rate gees stenecatn's'scl are sone 224 
Measurement of an Arc of the Meridian in India..........++0+++ Spnecass reds 
Protoxide of Copper. ..... Peuanr Be ete Aa aah caeaiclome ein sie vie sietsiem sateen 
Fall of Stones from the Atmosphere. ...+..-+++ we ccccsecceccssensscoese 228 
Blue Glass from Iron .. ...... ata aiereueiotietetas= S slaitataiele lcs ereiets Wreic- sie ebide 
Fusion of Platinum .......... +++ Risletaeld 5 araratuipfckare orate cokes Ralsicineidsicej eee ZeG 
Formation of the Vegetable Epidermis. ........seesseeeeeeeseeeeeeseeee Ibid, 
Method of procuring Meconic Acid. .......-.++ eoneccageceercecccsceged 230 
Properties of Meconic Acid. .............0+- Seis ete stot ctal cists eibeiniaicloeratater a ibid. 
On the Equivalent Number for Neos Add: eiatelas's SR RAOC OD wesves ok 
Eeleaune from/Fassa, in the Tyrol’ 302. :.562.i.. ce tncuesacdssesseces ss 288 
Wodanium........ AC COCA anon Pare meee ce tetetadin le aia"een eae hei ibid. 
ERI 2 elie ad are clap dein dee pc aie Ys alpine eine ate Se Soncon dbo. aed 208 
Meteorological Table kept at Kinfauns Castle ...........-- habit sasvee 204 
Register of the Weather at New Malton, in Yorkshire .. 1. 2nd: 
Death of Prof. Luigi Brugnatelli..... nor deeaenseisc Peliaectai sisi atnes 235 
Col. Beaufoy’s Magnetical and Meteorological Observations, for January. 236 
Mr. Howard’s Meteorological Journal, Jan. 19 to Feb. 16. .......-+005 239 
—— 
NUMBER LXXVI.—APRIL. 
On the Measure of Temperatures, and on the Laws of the Communica- 
tion of Heat. By MM. Dulong and Petit (continued) ...........+.. 241 
On the Direction of the Radicle and Germen. By the Rev. Patrick Keith 252 - 
On the Phenomena of Sanguification, and on the Blood in general. By 
EME OL: (CORTENUCE): 0.5 ves ciecnive ses ce cy ses deusncnse deivau ae eaiamepia 265 
Origin of Steam-Boats, and Description of Stevenson’s Dalswinton Steam- 
NE do eB edie» o'e'ciodanv's> suse 6 dette mfp Biehtia ah 4 fesin ss 279 
Experiments on Muriatic Acid Gas. be, inte Wisma M.D. F.R.S.E. 
(concluded)..... Gs eliora nheretc ede abe Ma hehe hats win ehteatae sa Bfaakels PA tr 285 
