A Table. 



The encrtafc wf mttittt u at- of all the firmer doctrine touch- 

 wayef made in the proportion of { ing gravity. 

 the odde numbers. \ 6. Gravity and levity do not fig- 



nific an intrinfecall inclination 

 to fuch a motion in the bodies 

 themfelves which are termed 

 heavy and light, 

 j. The more denft a body , the 



morefwiftly it defcendeth. 

 8. The velocity of bodies defcend~ 

 ing doth not encreafe in propor- 

 tion to the difference that may 

 be between their fevtrall den- 

 fit'tes. 



p. Mor e or lejfe gravity doth pro- 

 duce a fwifter or a jlovter dcf- 

 cendino- of a heavy body, jfri- 



n 



Jrotles argument to difprove 

 motion in vacuo, it made good. 

 IO. The reafon why at the inferior 

 quarter of a circle, a body doth 

 defcend fafter by the arch of 

 that quarter, then by the cord 

 of ^. 



10. 3^0 motion can encreafe for 

 ever, without comin? to a pe- 



o / 



riod. 



1 1. Certain problemes refolved 

 concerning the proportion o 

 fame moving Agents compare 

 to thetr effects. 



1 2. When a moveable cometh t 

 reft, the motion doth decrea[e 

 according to the rules of en- 

 creafe. 



CHAP. X. 



Of Gravity and Levity; andoflo- 

 fall Motion, commonly term- 

 ed Naturall. 



\. Thofe motions are called natu- 

 raU, which have constant eau- 



fes ; and t ho ft violent, which 



are contrary to them. 

 2. The firft and moft generall o- 



feration of the funne , if the 



making and raijiug of at owes. 

 5. The light rebounding from the 



earth with atonies, caufeth two 



ftreams in the aire ; the one af~ 



c ending, the other defc ending ; 



and both of them in a perpen. 



dicular line. 

 4* 9s4 denfe body placed in the , 



aire between the afcending and 



CHAP. XI. 



depending ftream, mutt needi 

 defcend. 

 5. A more particular explication 



An anfwer to objections again ft 

 the caufes ofnaturall motion, 

 avowed in the former chapter ; 

 and a refutation of the contra- 

 ry opinion. 



The firft objection anf-cvered 

 why a hollow body defcendeth 

 flower then afolid one. 



The fecond objection an fiver ed 

 and the reafonsfyown, why a- 

 tomes do continually overtake 

 " 3 tht 



