TABLE OF CONTENTS 



TO THIS TWENTY-NINTH VOLUME. 



MAY, J811. 



Engravings of the following Subjects: 1. Dissections of Plant?, illustrating the 

 Growth of the Bud, by Mrs. A. Ibbetson. 2. Crystals of AUanite, by Dr. 

 T. Thompson. 3. Instruments for measuring the Velocity of Rivers, by Mr. 

 B^egnier. 



I, On the Interior of Plants. Letter II. By Mrs. Agnes Ibbetson I 



n. Observations on the Hypothesis, which refers chemical Affinity to the elec- 

 trical Energies of the Particles of Matter. By J. D. Maycock, Esq. Com- 

 municated by the Author - - - - 12 



III. Observations on the igniting, or Wire-melting Power of the Voltaic Bat- 

 tery, as proportioned to llie Number of Plates, employed ; with an Account 

 of some Experiments on this Subject, made in Conjunction with Mr. John 

 Cuthbertson; by Mr. John Singer, Lecturer on Chemistry and Natural PhU 

 losophy. Communicated by Mr. Singer - - 29 



rV. On the different Forces with which Tubes, Bars, and Cylinders adhere to 

 a Magnet. In a Letter from Mr. E. Lydiatt - - 34 



V. An Answer to Mr. Murray's Observations on the Nature of Potassium and 

 Sodium: by Mr. John Davy - - - , 35 



VI. On the Nature of Oximuriatic Gas, in reply to Mr. Murray. By Mr. 

 John Davy ----- 39 



VII. An Attempt to answer the Queries proposed by F. D. in ihe Journal for 

 April last: b) William Crane, Esq. F. 11. M. S. Edinburgh - 44 



Vin. Experiments on AUanite, a new Mineral from Greenland; by Thomas 

 'ihomson, M. D. F. R. S. E. Fellow of the Imperial Chirurgo-Medical' 

 Academy of Petersburgh - - - - 47 



IX. Observations on Three Papers of Mr. Davy. By Messrs. Gay-Lussac and 

 Thenard - - - - - -- 59 



X. Observations respecting the Sensible Perspiration of the Dictamnus Albus^^ 

 or Fraxinella: by Mr. Robert Lyall, Surgeon, M, R. P. S. E., &.c. com- 

 municated by the Author - - - ' -^ 67 



XI. Description and Use of a Kheumameter, to estimate and compare the Ve- 

 locity of the Current of Rivers: by Mr. Regnier, Conservator o<^he ctntral 

 Museum of Arulirry - . - - ^ 68 



Scientific N^ws - - -* - - 72 



Meteorological Journal - .- ^ - • - 80 



JUNE, 



