314 Intelligence and Miscellaneous Articles. 



Expt. Calculated. 



Carbon 7004 or 40 atoms 15304 70-02 



Hvdrogen . . 788 — 26 161-5 7-42 



Oxygen 22-08 — 5 500-0 22-56 



10000 2192-9 100-00 



It will be observed that these results agree, with that obtained 

 from the ammoniacal compound, M. Dumas remarks that there 

 are two circumstances which characterize the oils that are heavier 

 than water, viz. the great quantity of oxygen which they contain, 

 and the great resistance which they oppose to decomposition, oil 

 of cloves requiring to be slowly passed in vapour over a column of 

 6 or 8 inches of oxide of copper. 



A substance deposited from the distilled water of cloves, and 

 which was crystallized in pearly scales, yielded by analysis, 



Carbon 7225 or 40 atoms 1530 73-55 



Hydrogen .. 7"64 — 24 lf>0 7"21 



Oxygen 20-11 — 4 400 19 24 



100-00 2080 1C0-00 



M. Dumas considers this as a peculiar compound requiring further 

 examination : at first he was inclined to suppose it to be an isomeric 

 state of the oil of cloves. 



Caryophilline is a peculiar substance, which after some time is 

 deposited in a crystalline form from oil of cloves: this was found by 

 M. Dumas to consist of 



Carbon .... 7975 or 40 atoms 1530*4 79-27 



Hydrogen . . 10-48 — 32 200-0 .... 10 36 



Oxvgen... 10 22— 2 200-0 . . . . 10-37 



1930-4 10000 



This composition is identical with that of natural camphor. 

 M. Dumas analysed indigo without previous purification, and 

 such as chemists have hitherto subjected to examination. He found 

 it to consist of 



Carbon 71-94 



Hydrogen 4-12 405 



Azote 10-30 



Oxygen 13 64 



100-00 



These results differ but little from those previously given, and 

 prove that they were sufficiently correct. 



There were afterwards subjected to analysis: 1st, sublimed indigo 

 purified by alcohol ; 2nd, precipitated indigo purified by alcohol; 

 3rd, precipitated indigo, made hot and washed with boiling alcohol; 

 4th, the same, again washed with boiling potash, and then with 

 boiling alcohol. 



The results differed but very little; the mean gave, 



