1 m + I o 8-130 



nese \ 



DO 



52 Agronomical and Magneticul Observations [JutT, 



Number of Weight of an \^S 



atoms. integrant particle. 



93. Peroxide of cobalt ... .1 c + 3 o 10-326 



99. Protoxide of manga 



i;ese 



100. Deutoxide of man-? l m + o o 9-130 



ganese 5 "" " V"""\^ 



10}. Tritoxide of manga-? Y m+ 5 Q 10 . ]30 



nese \ 



102. Peroxide of manga-? Y m+ 4 n . igo 



nese 3 



103. Protoxide of uranium 1 u + 1 13*000 



104. Peroxide of uranium . .1 u + 3 15-000 



105. Deutoxide of molyb-? , m+ 2 rsS2 



106. Peroxide of molyb-? x 3 q g . 8g2 



denum 3 



107. Deutoxide of tungsten 1 t + 2 10-000 



10S. Deutoxide of cerium . . 1 c + 1 13-494 



109. Peroxide of cerium . . .\ c + 3 0..., . .14*494 



But I have carried this table to as great a length as is con- 

 sistent with the nature of this Journal. I shall therefore stop at 

 present, and insert the rest of the table in a future number. 



I presume the method of denoting the number of atoms 

 combined will be intelligible to every reader. It is denoted by 

 figures prefixed to the initial letters of the substance s uniting 

 together. But to preclude the possibility of mistake a plate has 

 been engraved representing the first 41 substances in the table by 

 Mr. Dalton's symbols. In it the number of atoms existing in 

 each combination is represented to the eye. The figures in the 

 plate refer to the figures prefixed to the table. The name fol- 

 lowing the figure in the table is the name of the symbol in the 

 plate under the same figure, Thus after 36 in the table we find 

 soda. The symbol under 36 in the plate represents soda ; and 

 we see that it is a compound of 1 atom of sodium and 2 atoms 

 of oxygen. 



Article X. 



jltlronomical and Magnetical Observations at Hackney Wick, 



By Col. Beaufoy. . 



H&ckucr Wicfc. Grrtnmcb Tim* 



J«ne 1C, Emersion of Jupitcr"t 2d sateljitc . .. .9h 4fi' 39" 91» 46' 458*' 

 Observations are in Meqg Time. Jupiter's limb not well defined. 



