ppened to him to have seen only two of
these cases; and that he has nothing to offer respecting them, either
in theory or practice[9].

[Footnote 9: Ad idem genus morbi altera species rarissima ab
auctoribus praetervisa referenda videtur, quam non aptius
nominari posse putem quam scelotyrbem festinantem, seu
festiniam.

SECT. II. _Scelotyrbe festinans_: est peculiaris scelotyrbes
species in qua aegri solito more dum gradi volunt currere
coguntur, quod videre est apud D. Carquet, et observavit
Leydae illustr. Gaubius. _Patholog. instit._ 751, et in
loquela haec _volubilitas_ dicitur qua lingua praecurrit
mentem. Video actu mulierem sexagenariam hoc affectam morbo
siccitati nervorum tribuendo; laborat enim rheumatismo sicco,
seu ab acrimonia sanguinis, dolores nocte a calore
recrudescunt, a thermis non sublevantur: ei praescripsi
phlebotomiam, et praemissis jusculis ex lactuca, endivia, et
collo arietis, lene catharticum, inde vero lacticinia.

Est affinitas cum scelotyrbe, chorea viti, deest flexibilitas
in fibris musculorum; unde motus breves edunt, et conatu seu
impetu solito majori, cum resistentiam illam superare
nituntur, velut inviti festinant, ac praecipiti seu concitato
passu gradiuntur. Chorea viti pueros, puellasve impuberes
aggreditur; festinia vero senes, et duos tantum hactenus
observare mihi contigit. Quam multos autem videmus morbos,
paucissimosque observamus. De theoria et praxi nihil habeo
quod dicam; etenim sola experienta praxin cujusvis morbi
determinat, et ex hac pro felici vel infausto successu
theoria dein elicienda est. _Nosolog. Methodic._ Auctore, Fr.
Boissier de Sauvages. Tomi. II. Part ii. p. 108.]

Having made the necessary inquiries respecting these two affections,
_Tremor coactum_ of Sylvius de la Boe and of Sauvages, and _Scelotyrbe
festinans_ of the latter nosologist, which appear to be characteristic
symptoms of this disease, it becomes necessary, in the next place, to
endeavour to distinguish this disease from others which may bear a
resemblance to it in some particular respects.

CHAP. III.

SHAKING PALSY DISTINGUISHED FROM OTHER DISEASES WITH WHICH IT MAY BE
CONFOUNDED.

Treating of a disease resulting from an assemblage of symptoms, some
of which do not appear to have yet engaged the general notice o