Secondly, that it is rather dear, which also I
grant, for in my time East Indian opium has been three guineas a pound,
and Turkey eight. And thirdly, that if you eat a good deal of it, most
probably you must--do what is particularly disagreeable to any man of
regular habits, viz., die. {12} These weighty propositions are, all and
singular, true: I cannot gainsay them, and truth ever was, and will be,
commendable. But in these three theorems I believe we have exhausted the
stock of knowledge as yet accumulated by men on the subject of opium.
And therefore, worthy doctors, as there seems to be room for further
discoveries, stand aside, and allow me to come forward and lecture on
this matter.
First, then, it is not so much affirmed as taken for granted, by all who
ever mention opium, formally or incidentally, that it does or can produce
intoxication. Now, reader, assure yourself, _meo perieulo_, that no
quantity of opium ever did or could intoxicate. As to the tincture of
opium (commonly called laudanum) _that_ might certainly intoxicate if a
man could bear to take enough of it; but why? Because it contains so
much proof spirit, and not because it contains so much opium. But crude
opium, I affirm peremptorily, is incapable of producing any state of body
at all resembling that which is produced by alcohol, and not in _degree_
only incapable, but even in _kind_: it is not in the quantity of its
effects merely, but in the quality, that it differs altogether.
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