perspire more in the night, yet the perspiration is more 

 natural and less violent, and more according to the ne- 

 cessities df our constitutions in the night, than in the 

 day. Besides, the darkness is less subject to noise and 

 disturbance than the day. Now all these things are 

 wonderfully provided for, by the rotation of the earth 

 about its axis. For thereby we have the vicissitudes of 

 day and night, the day for spending our spirits, the night 

 to recruit them ; as also for nourishing the muscles,, 

 bones, channels, and other parts of the body ; for the 

 business of nutrition is mostly, if not altogether, per- 

 formed in the time of rest. Likewise how comfortable 

 and refreshing are the cool breezes of the night ; and 

 the trade winds to those that live under the equatorial 

 parts? Without which, life would both be exceeding 

 short, and very grievous. 



These winds are the necessary effect of the rotatiort 

 of the earth about its axis, which under the line makes 

 the rays of the sun direct and equal all the year round ; 

 so that these parts being constantly under the sun's in- 

 fluence, his heat rarefies one part or the air, and the 

 cooler and heavier part presses upon the hotter, and so 

 makes a continual wind in his course from east to 

 west. 



Moreover, let us reflect upon our vegetables, which are 

 the support of animals ; the sun rarefies, and consequently 

 rakes, the sizy vegetables juices, at the roots of the tender 

 seeds, and thereby forces the folded branches to expand 

 and enlarge. Now, were the sun constantly shining 

 upon them, these juices would not be at liberty to settle 

 and consolidate in the fit places of the branches ; but 

 would be still rising higher and higher, till at last they 

 burst the canals ; whereas by this vicissitude of heat and 

 cold, what is raised in the day .time, has time to settle 

 and consolidate in the night. Its cold turns the thin 

 juices into sizy substances, which the supervening heat, 

 by exhaling the watry parts, hardens and fixes. On the 

 other hand, had not the earth moved upon its axis, but 

 only turned round the sun in its annual period, we had 



