( 62 ) 
by ihe Skin, being retained, falls lipdii 
thefe Glands, and irritating them, caufes a 
Sneezing, running of the Nofe, or a Cough; 
&c> or a Catarrh may be from too much 
Serum either in the whole Body^ of in 
thefe Parts ; or from a natural Laxnefs of 
the Coats of the Glands, or a greater Flux 
of Humours to, or a flower Motion of the 
Blood about the Head ; for the Glands 
there, ancj of the Throat, are the moft fuf- 
ceptible of this encreafed Quantity of Serum, 
beeaufe they are provided with the leaft 
Helps either to refifl: br throw it off. For 
this Reafon fuch as have this Serum much 
encreafed, are dull and ina&ive ; for the 
Veflels of the Brain being W r eak and dilata^ 
ble, will fuftain a great Share of the Load 
which flretches the Blood- Veflels, and com- 
prefles the Roots of the Nerves ; hence lefs 
nervous Juice, and the Influx of that into 
the Nerves is alfo diminifhed, the Mufcles 
become refty, fluggifh and inactive : But 
the Spirits being detained in the Brain, 
caufe Anxiety, Reftlefsnefs, fhorter diftur- 
bed Sleep ; and being fent off into the 
Nerves of involuntary Motion, the Heart is 
invigorated, the Action of its Mufcles is en- 
ereafed 3 
