C 659 ) 
it; but it being confined for tome time (for Reafon: 
aliedged) does neceffaniy put them upon repeated Con- 
tractions (in which he places the Nature of the Rigor') 
till they at laft expei it into the Mafi of Blood, amcngft 
whofe very Heterogeneous Particles (many of which 
too, are Sulphurous) it makes a great Commotion ; 
which cannot ceafe till both the Particles of this Ferment, 
and the disturbed Ones of the Blood, are fubdued and 
reduced into order, or expelled. But this Atony of the 
Glandules of the Brain continuing, nay in fome meafure 
increafed by the Difeafe, the fore-mentioned Admifiioa 
of more Heterogeneous Matter muft be repeated, as, in 
the fame order, the Maturation, Eruption into~a&", and 
Extrafion of ir, with the aliedged Confequents^ and 
that fb often tili either by Medicines, or the change of 
Seafon, or other Caufes, theft Glandules come to reco- 
ver their Priftine Force. 
This Hypothecs he endeavours to confirm from fbme 
obvious general Confiderations, and then proceeds fir ft 
to enumerate, in their order of Invafion, the Symptoms 
which mod ufually offer thernfelves, and then to foive 
them from his Hypothecs. 
This done, he ccnfiders the Types ; which not having 
been accounted for to his c'atisfadbon by former Authors, 
be takes himfeif to be obliged to try whether they can 
be from his Hypothecs, and therefore offers a new one 
, about them to consideration. 
Therefore in the firft place he connders that the three 
forts of regular and ufual Types, Quptidian, Tertian^ 
and Quartan, do generally obferve certain determinate 
£tafbns of the Year, and not frequently happen at o 
thers, viz. Quotidians in the Winter^ Tertians in the 
Spring, and Quartans in the Autumn ; bm that rarely 
Intermit tents begin in the Summer. In the feveral Con 
ftuut;ons of thcfe £ea(bns he luppofesour Blood and other 
Juices obtain likewife deferent Conftit ,t':ons 5 which he 
M explains 
