15(> ACTION OF SALTS ON VOLATILE OILS. 



while mild muriate of raeicurj'^ was deposited on tlie sides of 

 the pliial. 

 Calomel and Exp. 11. Oil of lavender kept several months on rolld 



oil of lavea- • , ,. ,, ^ ^ i •,^ t • , 1, 



der. raunatfe ot mercury, well washed ana well levigated, under- 



went no alteration. 

 Cinnabar and ^.rp. ]2. Factitious cinnabar in powder and oil of rose-? 



y. j^j^j.^ exhibited no reaction during or after their mixture. 

 Sulphate of Exp. 13. Oil of rosemary poured on turbith mineral, and 



oif oT'rosema- ^^P^ some tjme, experienced a change. It let fall a greenish 

 ry. fioccnlent precipitate, and at the same time acquired the 



property of sinking in water, when poured on it. A portion 

 of the turbith was converted into gray oxide of mercury, 

 which retained in combination that part of the oil, that haci 

 become resinous. 

 Red nitrous JSxp, 14. I put into a phial j\ drachm of red precipitate 



^uH' and o^f of ^'^^ **"^ ounce of volatile oil of lavender, and kept the 

 lavender, in mixture several months in the shade. The oil had formed 

 ' ^^ "' 4 whitish sediment, and the red precipitate was in part re- 

 duced to gray oxide of mercury. The whitish sediment was 

 soluble in spirit of wine, and this solution turned milky on 

 the addition of water. The oil retained the fluidity, colour, 

 and smell of oil of lavender, swatu on water, and dissolved 

 well in alcohol. 

 irithe sun. Having exposed a similar mixture to the light of the sun, 



the oil lost somewhat of its transparency and deposited a 

 whitish sediment, and the red precipitate had assumed the 

 shining metallic colour of iron tilings. 

 MurJateofan- Exp. 15. Into a small phial I put a diachm of crystal- 

 timony and cil jj ^^ caustic muriate of antinionv, and poured on it an equal 

 of rosemary ^ ^-v " • , i • . 



equal parts. weight of oil pf rosemary. On corking the phial I imme- 

 diately perceived a great heat, the cork flew out, the oil 

 spouted out with violence, and the inside of the phial re- 

 mained coated with a black oil of a particular smell mixed 

 with the smell of rosemary. 



This mischance induced me to repeat the experiment iq 

 a krger vessel, and with different proportions of the ingre- 

 dients. 

 ? parts of <he I P"^ '"^"'^ ^ phial eight parts by weight of oil of rose- 

 oil to I of the mary with one of crystallized caustic muriate of antiruonj'. 

 The heat was scarcely perceptible ; the muriate of antimony 



" feli 



