xviii CONTENTS. 



XII. Experimental Refearches concerning the Principle of the lateral Com- 

 munication of Motion in Fluids, applied to the Explanation of various 

 Hydraulic Phenomena. By Citizen J. B. Venturi, Profeffor of Experi- 

 mental Philofophy at Modena, IVTember of the Italian Society, &c. p. 422 



Comparative experiments, Ihewing the quantities of water emitted under like circumftances through 

 different tubes. Praftical propofition of great utility, by which the expenditure is more than 

 doubled. Roman law concerning the enlargement of pipes for water. 



Accounts of Books, 8ic. — ~ — — p. 426 



Philofophical Tranfaflions, Part II. 1798. — RoUo on Diabetes Mellitus. — Pajot-des-Charmes on 

 Bleaching. — Chemical Memoirs of Pelletier.— Leybourn's Tranflation of Dr. Stewart's Propofi- 

 tiones Geometricae. — Note refpefting Dalgarme, Leibnitz, Wilkins, and the Univerfal Charafter. 



JANUARY 



