224 Analyses of Books. [Sept* 



Comparison of the Variation in the Years 1813 and 1814. 



C Morning 

 April < Noon . . . 



(_ Evening. 



C Morning 

 May < Noon . . . 



C Evening. 



("Morning 

 June 4. Noon . . . 



L Evening. 



("Morning 

 July < Noon . .. 



(.Evening. 



n • r.n ( Between nnon of (he 1st July > - ___ . , 

 Raiu fallen 1 u , . .. . . . ■* J - 783 inehw. 



( Between noon of the 1st Aug. > 



The following errors have been committed in deducing the mean 

 variation, and are corrected in the present number : — 



1813 Dec. Morning Obs for 24* IT2\" read 24°17'30" 



Ditto Noon .for l h 53' read !<• 51'; for 24 19 49 read 24 20 30 



Nov. Morning .for 8 42 read 8 40; for 24 17 42 read 24 17 17 



Aug. Morning for 24 15 58 read 24 15 55 



July Evening ."for 24 13 56 read 24 16 4S 



■ June Morning '.for 24 12 35 read 24 12 55 



May Evening .for &' 14' read 6 h 40' 



Aug. 2. — The morning observation was unusually great ; and 

 the two needles differed from each other 3' 33" j a remarkable 

 difference. 



Article XI. 

 Analyses ok Books. 



Werner's Nomenclature of Colours, with additions, arranged so as to 

 render it highly useful to the Arts and Sciences, particularly 

 Zoology, Botany, Chemistry, Mineralogy, and Morbid Anatomy. 

 Annexed to luhich are Examples selected from well known Objects 

 in the Animal, Vegetable, and Mineral Kingdoms. By Patrick 

 Syrne, Flower Painter, Edinburgh ; Painter to the IVernerian 

 and Horticultural Societies of Edinburgh. Edinburgh, 1814. Svo. 



The importance of colour in mineralogy is understood by those 

 only who have paid some attention to the external characters of 

 minerals. Nothing is more common than to hear persons who 



