Book 1. Yland of BARBADOS. 
requifite to the due Exertion of the Animal Occonomy, and confe- 
quently, in fome meafure, of the rational Faculty. 
Nor is the fudden Alteration, upon the Change of Wind and Weather, 
peculiar to the human Conftitution alone ; for other Animals feel the 
Viciflitudes of the Weather, efpecially in variable Climates. This is a 
Remark as early as the Time.of Virgil, which appears by the following 
Lines : 
- . « Ubitempefas & cali mobilis humor 
Mutavere vias, & Fupiter humidus Auftris 
Denfat, erant que rara modo, & que denfa, relaxat. 
Vertuntur [pecies animorum, & pettora motus 
Nune alios, alios, dum nubila ventus agebat, 
Concipiunt. Hine ille avium concentus in agris, 
Ex lete pecudes, & cvantes gutture corvi.  . Guo. I. 416, 
But with the changeful Temper of the Skies, 
As Rains condenfe, and Sunfhine rarefies ; 
So turns the Species of their alter’d Minds, 
Compos’d by Calms, and: difcompos’d by Winds. 
From hence proceeds the Birds harmonious Voice : 
From hence the Crow exults, and frisking Lambs rejoice. 
Thus far have we briefly endeavoured to account, from the Nature of 
the Climate, and the Mechanifm of the human Body, for that volatile 
Difpofition, fo peculiar to the Inhabitants of hot Climates : That Irafci- 
bility of ‘Temper, likewife, which is afcribed to them, is, in a great mea~ 
fure, the natural Confequence of the above-mentioned Difpofition ; for, 
as Water that is already hot, will, with’ a little additional Heat, boil 
over, fo when the Animal Spirits are in a high Flow, and the Will, by the 
Propenfity of long-rooted Habits, unhappily affifts, and is bent to gratify 
fome favourite Paffion, the Tranfition from a Degree of Sprightlinefs to 
Irafcibility is natural and eafy. 
If we purfue this Argument a little further, it will appear more con- 
clufive by reafoning upon, and experimentally comparing the Correfpond- 
ency between artificial and natural Heat, and their fimilar Effects upon 
human Bodies. 
This will, in fome meafure, anfwer to two different and oppofite Cli- 
mates: For Inftance, If, in very cold Weather, the Inhabitants of far 
Northern Countries drink fuch a Quantity of {trong {pirituous Liquors, as 
will caufe a free Circulation to the Blood, before almoft congealed with 
Cold, they will affume a fudden lively Chearfulnefs: Should they ftill 
drink 
it cannot be taken without Danger of being furfeited.; nor is it le{s improper to Perfons who labour -under 
any Degree of Phrenfy or Madnefs, whofe periodical Fits, at the Full and Change of the Moon, return 
here with greater Violence than in a cold Climate: Yet, tho’ we enjoy, or may enjoy here, in general, by 
a regular Conduct, a more chearful Scene of Life, free from. the unequal Changes of Heat and: Cold ;° 
yet it muft be owned, that we are, in a great meafure, Strangers to thofe invigorating Starts of Livelinefs, 
ge me Animal Spirits diffufe thro’ the whole Body in moderate frofty Weather, and a clear Air, in 
ngland. 
igs 
