Jao On the Oil extraEiedfrom the 'Female Cornel Tree. 



gard to diapalma phifrer; by which means I obtained art 

 empladic matter of a good confidence, and a colour perfectly 

 limiiar to that of the plaftcr called v'tgo cum mcrcurio. Tins 

 colour having induced me to believe that I had failed in my 

 plalter, which, as 1 luppofed, ought to be of a whitiih co- 

 lour, 1 (Several times repeated the fame experiment with all 

 the care pofiible, and each time I obtained a plader of the 

 fame colour. The theory of planters having been very well 

 defcribed by C. Deyeux, \ (hall not fay any thing of it here. 



1 fubje&ed a portion of this oil to the contact of the atmo- 

 fpheric air, and found that at the end of fome time it had 

 ail limed i little more confidence. 



The fame experiment was repeated, but with the addition 

 of water, taking the precautions prefcribed by Berthollet. 

 At the end of a month the oil had aimmed a lolid confid- 

 ence, and a white colour limiiar to that of wax. 



Being defirous to afcertain, in the lad place, ofwhatufe 

 this oil mi^ht be in domedic ceconomy, I filled with it a 

 lamp containing a cotton wick, which, when lighted, gave a 

 ftrong and beautiful light, without fmoke or any fenlible 

 fmell : the fame lamp, containing a wick of the fame kind, 

 was fucceffively filled with olive oil and raptfecd oil; the 

 latter laded two hours, the olive oil two hours and a quarter* 

 and that of the cor nus fan guinea two hours and a half. 



If we add to theft different experiments the property which 

 this oily liquid has of not freezing, we (hall have all the cha- 

 racters of the oil of the cornus J anguine . 



From thel'e experiments, the only ones pofiible for me to 

 make, there is reafon to conclude, that the oily juice obtained 

 by expreihon from the berries of the cornus janguinea is a 

 real oil pollening certain properties which may render it ufe-» 

 ful to the arts, to commerce, and even to medicine. I am 

 of opinion alfo that, according to the principles of Fourcroy^ 

 it ought to be placed in the fecond clafs containing the ficca- 

 tivc oils, which fpeedily grow thick, do not become fixed by 

 cold, which inflame by the nitrous acid only, and which, 

 with the fulphuric acid, form a fort of refim 



L. Re- 



