odagrae periodus._ ---- of the gout.
10. _Erysipelatis periodus._ ---- of erysipelas.
11. _Febrium periodus._ ---- of fevers.

ORDO III.

_Retrograde Associate Motions._

GENUS I.

_Catenated with Irritative Motions._

SPECIES.

1. _Diabaetes irritata._ Diabetes from irritation.
2. _Sudor frigidus in asthmate._ Cold sweat in asthma.
3. _Diabaetes a timore._ Diabetes from fear.
4. _Diarrhoea a timore._ Diarrhoea from fear.
5. _Pallor et tremor a timore._ Paleness and trembling from fear.
6. _Palpitatio cordis a timore._ Palpitation of the heart from fear.
7. _Abortio a timore._ Abortion from fear.
8. _Hysteria a timore._ Hysterics from fear.

GENUS II.

_Catenated with Sensitive Motions._

SPECIES.

1. _Nausea idealis._ Nausea from ideas.
2. ---- _a conceptu._ Nausea from conception.
3. _Vomitio vertiginosa._ Vomiting from vertigo.
4. ---- _a calculo in uretere._ ---- from stone in the ureter.
5. ---- _ab insultu paralytico._ ---- from stroke of palsy.
6. ---- _a titilatione faucium._ ---- from tickling the throat.
7. ---- _cute sympathetica._ ---- from sympathy with the skin.

GENUS III.

_Catenated with Voluntary Motions._

SPECIES.

1. _Ruminatio._ Rumination.
2. _Vomitio voluntaria._ Voluntary vomiting.
3. _Eructatio voluntaria._ ---- eructation.

GENUS IV.

_Catenated with External Influences._

SPECIES.

1. _Catarrhus periodicus._ Periodical catarrh.
2. _Tussis periodica._ Periodic cough.
3. _Histeria a frigore._ Hysterics from cold.
4. _Nausea pluvialis._ Sickness against rain.

* * * * *

CLASS IV.

DISEASES OF ASSOCIATION.

ORDO I.

_Increased Associate Motions._

GENUS I.

_Catenated with Irritative Motion._

The importance of the subsequent class not only consists in its elucidating
all the sympathetic diseases, but in its opening _a road to the knowledge
of fever_. The difficulty and novelty of the subject must plead in excuse
for the present imperfect state of it. The reader is entreated previously
to attend to the following circumstances for the greater facility of
investigating their intricate connections; which I shall enumerate unde