VJll 



CONTENTS. 



Page 



Dr. Hamel on the Effect of Sulphuric Acid on Agates 396 



Constituents of the Ribes Grossularia ibid. 



— Angelica Archangelica 397 



Kew Patents ibid. 



Meteorological Table and Observations, March 2 to 3 1 899 



NUMBER XXX.— JUNE. 



A Memoir on Iodine. By M. Gay-Lussac, continued 401 



Analysis of the Excrements of the Boa Constrictor. By Dr. Prout 413 



On the Colouring Matter, or Ink, ejected by the Cuttle Fish. By the 



Same 417 



Refutation of Mr. Walker's Claim to the Discovery of the Uses of the 



Cerebellum : with further Observations on Respiration. By Dr. Cross 420 

 Experiments showing that in Hepatitis the Urine contains no Urea. By 



Mr Rose 424 



Reply to Mr. Phillips's Animadversions. By Mr. Hume 428 



Remarks on the Phenomena of Galvanism 438 



Defence of the Opinion that all Numbers have Four Imaginary Cube 



Roots. By Mr. Lockhart 439 



Astronomical and Magnetical Observations. By Col. Beaufoy 443 



Critical Analysis of the Transactions of the Geological Society, Vol. II. 444 



Proceedings of the Royal Society, April 27, May 4, and 1 1 452 



Linnaean Society, May 2 and 24 455 



Geological Society, April 21 and May 5 456 



French Institute for 1814 457 



Of the River Missouri 463 



An Analogy respecting Volcanoes 464 



Arragonite 4p5 



Whether Cast-Iron expands on Congealing ibid. 



On the Production of Complimentary Colours by the successive Reflcclion 



of Polarized Light from Gold and Silver ibid. 



On the Multiplication of Images, and the Colours which accompany 



them, in some Specimens of Iceland Spar , ibid. 



Optical Properties of Iodine 466 



Oneries respecting the Visibility of the Stars in the Day-time ibid. 



On the Explanation of the Fluctionary Calculus 468 



Milky Juice of Plants 469 



Accident at Heaton Main Colliery, near Newcastle 47O 



New Patents 471 



Meteorological Table and Observations. April 1 to 3^) 473 



Index 475 



PLATES IN VOL, V. 



Plates Page 



XXVIII. Abbe de Bu<?e on an Algebraical Problem 53 



XXIX.andXXX. On Rents in the Earth 83 



XXXI. Orthoceraiites in Scotland I99 



XXXII. On Rents m the Earth 276 



XXXIII. Variations of the Barometer and Thermometer at 



Plymouth, Jan. to June, 1814 284 



XXXIV. Jilachine for the Manufacture of Potatoe Flour .... 351. 



4 



