CONTENTS. 



Of the Influence of Solar and Lunar Attraction on Clouds 

 and Vapours 58 



On Crystallography. By M. Hacjy. Translated from the 

 last Paris Edition of his Traitc tie Minera.'ogie 64, 121 



On Pendulums 81 



Report of the Dublin Cow- Pock Institution, under the Pa- 

 tronage of His Grace the Lord Lieutenant, for 1809 96 



Information, that a further Publication of the late Mr. 

 Smeaion's Engineery Designs and Papers is in hand. — 

 Copy of a List of the principal British Strata, by the late 

 Rev. John Michel, (of whose posthumous Papers on Geo- 

 logical Subjects, further Information is requested;) — ivith 

 some Experiments of Mr, Smeaton's on Limestones, — and 

 Queries respecting Mr. To field .. . . . . .. 102 



An Analysis of several Varieties of British and Foreign 

 Salt, (Muriate of Soda,) ivith a view to explain their 

 Fitness for different ceconomical Purposes . . 1 06, 171 



Description of a Metallic Thermometer for indicating the 

 higher Degrees of Temperature 119 



Dr. Healy on Cupping >. .. 131 



Observations on the Purity of Standard Gold . .. 132 



An Estimation of the Loss of Weight which takes place in 

 cooking Animal Food ' . . . . 142 



Letter from M. Vita lis, Professor of Chemistry at Rouen, 

 to M. Bouillon Lagrange, on the Amalgam of Mer- 

 cury and Silver, called Arbor Dianas 143 



Analysis of the Atropa Belladonna . 144 



Case of Hydrocele, improperly treated as Rupture . . 151 



A Sketch of a History of Pus 1 61 



Remarks on the Rev. C. J. Smyth's Letter on Systems of 

 Tuning Musical Instruments. Vol. xxxv. p. 448 . 165 



An Examination of the Instructions given in an anonymous 

 Pamphlet published in 1809, for Tuning an Equal Tem- 

 pi rament of the Musical Scale 167 



Analysis of the Scammonies from Aleppo and Smyrna; to 



which 



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