CONTENTS. v 



JUNE, 1812. 



An Engraving of Mr E. Lydiatt's Smicrologometer, for ascertaining the Te- 

 nacity of Metals, and Strength of Threads of Silk, Cotton, Linen, &c. 



I. A Description of the Smicrologometer for ascertaining the Tenacity of Me- 

 tals, Silk, Cotton, and Linen Threads, &c. invented by Mr. E. Lydiatt, 

 Professor of Mechanics, and Lecturer on Metallurgy and Manufactures, 

 &c. ------ 8i 



II. A Chemical Account of an Aluminous Chalybeate Spring in the Isle of 

 Wight. By Alexander Marcet, M. D. F. R. S. one of the Physicians to 

 Guy's Hospital, and Member of the Geological Society - 85 



III. Account of some new Experiments on Wood and Charcoal. By Benjl 

 Count of Rumfoid, F. R. SS. L. and E. M. R. I. A. &c. - 100 



IV. Inquiries concerning the Heat developed in Combustion, with a Description 

 of a new Calorimeter. By the same - - - 105 



V. Remarks on the Experiment of Dr. Bostock and Dr. Trail. In a Letter 

 from a Correspondent - - - - 125 



VI. Method of preparing a cheap and durable Stucco, or Plaster, for outside 

 or inside Walls. By H. W. Way, Esq. of Bridport Harbour - 126 



VII. Manufacture of Cloth and Cordage from Nettles. By Mr. Edward Smith 



132 



VIII. Account of Herrings cured in the Dutch Mode on board British Vessels. 

 By Francis Fortune, Esq. - 134 



IX. Method of Curing Herrings. By Mr. Sleavin - - 137' 



X. Letter on the Structure of the Water Lily, in Answer to a Correspondent. 

 By Mrs. Agnes Ibbetson - - - 137 



XI. On the Irritability of the Sowthistle and other Plants, with farther Qbser^ 

 vations on the Irritability of Vegetables. By D. J. Carradori 138 



XII. Chemical Examination of some Vegetable Substances. By Mr. Vau- 

 quelin - - - ... _ 143 



XIII. Of the Efficacy of Plumbago against Tetters. By Dr. Wienhold 148 



XIV. Meteorological Journal, by Luke Howard, Esq. - 150 



XV. Experiments on Camphoric Acid. By Mr. Bucholz - 151 



XVI. Inquiry concerning the Means of knowing the Proportions of Acid and 

 Potash, that enter into the Composition of Sulphate of Alumine and of Sul- 

 phate, Nitrate, and Muriate of Potash. By Mr. Curaudau, Prof, of Che- 

 mistry applicable to the Arts, and Member of various Literary Societies 153 



XVII. Analyses of Minerals. By Martin Henry Klaproth, Ph. D. 160 

 Scientific News - - - - - 162 



JULY, 



