Y.

Yawning, ii. 1. 1. 9.
Yaws, ii. 1. 5. 5.

Z.

Zona ignea, ii. 1. 5. 9. iv. 1. 2. 11. ii. 1. 2. 14.

* * * * *

ZOONOMIA;

OR,

THE LAWS OF ORGANIC LIFE.

PART III.

CONTAINING

THE ARTICLES OF THE MATERIA MEDICA,

WITH AN ACCOUNT OF THE

OPERATION OF MEDICINES.

* * * * *

IN VIVUM CORPUS
AGUNT MEDICAMENTA.

* * * * *

PREFACE.

THE MATERIA MEDICA includes all those substances, which may contribute to
the restoration of health. These may be conveniently distributed under
seven articles according to the diversity of their operations.

1. NUTRIENTIA, or those things which preserve in their natural state the
due exertions of all the irritative motions.

2. INCITANTIA, or those things which increase the exertions of all the
irritative motions.

3. SECERNENTIA, or those things which increase the irritative motions,
which constitute secretion.

4. SORBENTIA, or those things which increase the irritative motions, which
constitute absorption.

5. INVERTENTIA, or those things which invert the natural order of the
successive irritative motions.

6. REVERTENTIA, or those things which restore the natural order of the
inverted irritative motions.

7. TORPENTIA, those things which diminish the exertions of all the
irritative motions.

It is necessary to apprize the reader, that in the following account of the
virtues of Medicines their usual doses are always supposed to be exhibited;
and the patient to be exposed to the degree of exterior heat, which he has
been accustomed to, (where the contrary is not mentioned), as any variation
of either of these circumstances varies their effects.

* * * * *

ARTICLES

OF THE

MATERIA MEDICA.

* * * * *

ART. I.

NUTRIENTIA.

I. 1. Those things, which preserve in their natural state the due exertions
of all the irritative motions, are termed nutrientia; they produce the
growth, and restore the waste, of the system. These consist of a variety of
mild vegetable and animal substances, water, and air.

2. Where stronger stimuli have been long used, they become necessary for
this purpose, as mustard, spice, salt, beer, wine, vinegar, alcohol, opium.
Which however, as they are unnatural stimuli, and difficult to manage in
respect to quantity, are liable