CONTENTS. 



Board f>f SiiDerinlendence of the Bath and If 'eat of Eng- 



Unid Society. L'y W. Matthhws •• •• Page ^QO 

 Ll. Olh'^eri'atiu.'is t'pon tlie crysiah.'ized Bodies contained in 



Lava. Read at the '^leeti/ig of the Phi/sicul a7td Natural 



HiStiiry SctitHj of Gcnet'a, on the nth of Jpril \SOG. 



Bij M. G. A/nELvc Q9<^ 



Lll." On different ^Vmpcraments oj the Musical Scale. Bi/ 



iV/r. John Farev 313 



Lll I. DeH.riplioi; of an improved Htjgrometcr. Btj Lieu- 



tenant Henkv Katku, (f His Majesty's 12/A Regiment 



322 

 LIV. Second Extract of JM. Paysse's MS. Memoir upon 



Coffee- By M. PAKMIiNTIHR .. •- ;• •• 32G 



hV.^ Notice upon the Eri-itence of Platina in the Silver 

 Mine- of Guadalcanal, in Estramadura, in Spain. By 

 il7. VAUaUKLIN 335 



LVI. Upon the Formation of the Muriatic Acid. By 

 M. Pacchiani. Extract of a Letter J rein Professor 



VfAVF, (f Kiel, to M. Bv.RTHOLhET 338 



LVil. Account of some Experiments upon the Decompo'iition 

 of Water and the Prodncti:in of Muriatic Acid by the 

 Electrical Pile, made ot the Literary Society of Milan. 

 By M. PiERKK Ai.EMANi, Apotliecary to His Majeslyy 

 and Member cf that Society 339 



LV III. De'icriphon of the Camera Lucida. By Wi lli am H . 

 WOLLASTON, Sec. R. S 343 



LIX. On the Purple Violet Flower, and the different Shades 

 (f Colour U'hich may he extracted from it. By Joiin 



MiCHAKL HaUSSMANN 348 



LX. Extract of a Letter from M. Gkhlen, of Berlin, 



to M. VoGKi., containing some Remarks, \st. Upon the 

 ■ Formic and Pyrot'irtarous Acids ; '-id, Upon Carhuretted 



Sulphur; 3d, Upon the Klebschiefvr or Menilite of Menil- 



Montant 351 



LXl. Notice upon the Formation of the yicctcus Acid in 



the Stomachs of Persons who hare bad Digestion. By 

 'M. Pkrpf.rhs, Apothecary at Azilles. Cdnununicated 



iy M. Paumhntikr 33'2 



LXII. On employing the Poor in Parish IVorhhouscs. By 



the la/: BKNfJAMIN PUYCK, irJ.STjr 3.')-. 



LXHI. On the mo<!t profitable Size of Farming Cattle. Bif 



Cmaki.es GoiujON GpKv, Esq 363 



LXIV. Proceedings ff Ltarned Societie'! .. .. 366 

 LXV. Litelligence and Miscellaneous Articles .. 371 



THE 



