Foreign Vegetables.' 385 
foluble in all Liquors. In aqueous Liquors the 
Gum only diffolves ; in Spirit of Wine only the 
Refin. In Wine, in Vinegar, or in Brandy, both 
Subftances diffolve together. From this Diversity 
of Menftruums arife different Tindures of Opium, 
that is to fay, different not only in their Nature, but 
in their Effeds alfo. For the Tindure of Opium 
extracted by Spirit of Wine, by the general Con- 
fen t, is more intenfely narcotick, affeds the Head 
more violently, and often caufes Delirioufnefs, as 
I many Times obferved in a certain hypochondria- 
cal Perfon, who was troubled with Wakefulnefs, 
and when he took the Tindure of Opium prepared 
with Water, he flept with great Tranquillity ; but, 
on the contrary, when he took the Tindure drawn 
with Spirit of Wine, he was furprifingly affeded 
with a Phrenfy. 
The Tindure of Opium prepared with Vinegar 
fometimes fuppreffes the Urine, according to the 
Obfervation of James le Mort , a fkilful Phyfician 
and Chymift. That made with alkaline Salts is of 
little Service for procuring Sleep ; becaufe the Salts, 
vellicating the nervous Membranes by their Acri- 
mony, fhake off the Drowfinefs brought on by the 
Opium. It is true, that the Tindure of Opium 
joined with volatile urinous Salts provokes Sweat, 
and thus prepared is convenient in lbme Affedions. 
But I think, with the learned IVedelius , and the fkil- 
ful Phyfician and Chymift abovementioned, that 
the Preparation of Opium with Water is the fafeit, 
and the moft efficacious of all others. For nothing 
can be feared from this Menftruum and Opium 
thus prepared is not only purified from its hetero- 
geneous Parts, but is alfo deprived of its Refin, 
which fome Phyficians are afraid of. John Jones , 
a Phyfician of London , in a Treatife inti tied. The 
Myjleries of Opium revealed , puts fo high a Value 
C c upon 
