{ 



186 Mr. J. Glaisher's Remarks on the Weather 



For still further security, a determination of the platinum 

 in its double salt with the chloride was made : — 



1 2*784 grains of chloride of platinum and picoline gave 

 4'204 ... platinum. 



This corresponds to 32*88 per cent., and the calculation gives 

 32-94. 



The suspicion, then, of the occurrence of picoline in the 

 odorine of Unverdorben turns out to be perfectly correct ; at 

 the same time my experiments have clearly shown that odo- 

 rine is a mixture of picoline, with at least one other base, the 

 properties of which will be detailed in the second part of this 

 investigation. The quantity of picoline contained in bone-oil 

 is considerable, and it can be more readily prepared from that 

 substance than from coal-tar naphtha ; in fact, I obtained from 

 three hundred pounds of bone-oil a larger quantity of picoline 

 than that employed in my examination of it, which was ob- 

 tained from some hundred gallons of coal-tar naphtha ; and 

 by means of it, 1 shall be enabled to trace out the products of 

 its decomposition, which I was unable to pursue in my former 

 communication. 



The presence of aniline in bone-oil I have already alluded 

 to; and its quantity, though small, is by no means inconsi- 

 derable, when compared with that of the other bases. I did 

 not think it necessary to take any further means for its identi- 

 fication than its highly characteristic reactions with chloride 

 of lime and nitric acid. 



The investigation of the other bases is not yet in a suffi- 

 ciently advanced state for publication. The sparingly soluble 

 one has been especially troublesome, and its purification is 

 attended by difficulties which I have not yet fully overcome. 

 The consideration of these will be taken up in the second part 

 of this investigation. 



XXVII. Remarks on the Weather during the Quarter ending 

 June 30, 1848. By James Glaisher, Esq., of the Royal 

 Observatory, Greenwich *. 



THE meteorological returns for the past quarter furnished 

 to the Registrar-General have been obtained from thirty- 

 seven different places, situated between the latitudes of 50° 

 and 55°, and between the longitudes of 5 0, 18' W. and 0°-J 6' E. 

 The results from every place have been examined and 

 further reduced by myself. The following are the particulars 

 of the weather during the quarter ending June 30, 1848. 

 * Communicated by the Author. 



