{ ?o ) 
Vertues. 8. By examining their manner of diffolution, or 
acting upon thofe bodies diffoluble in them^and the Texture 
of thofe bodies beforehand after the procels. 9. By eon- 
fidering, by what and how many means, fuch and fetch 
figures, a&ions and effects could be produced, and which 
of them might be the moft likely. See. 
He goes on to offer his thoughts about the Pores of bo- 
dies, and a kind of Valves in wood} about fpontaneous gene- 
ration arifing from the Putrefa&ion of bodies} about the na- 
ture of the Vegetation ofmold, mufhromes, mofs- fputsges} 
to the laft of which he fcarce finds any Body like it in tex- 
ture. He adds, from the naturall contrivance, that is 
found in the leaf of a Nettle, how the flinging pain is crea- 
ted, and thence takes occafion to difeourfe of the poyfoning 
of Darts. He fubjoyns a curious defeription of the fhape, 
Mechanifm and ufe of the fling of a Bee } and fhews the ad- 
mirable Providence of Nature in the contrivance and fa- 
brick of Feathers for Flying. He delivers thofe particulars 
about the Figure, parts and ufe of the head, feet, and wings 
of a Fly, that are not common. He obferves the various 
way es of the generations of Infedcs, and difeourfes hand- 
fomely of the means, by which they feemto adt fo prudent- 
ly. He taketh notice of the Mechanical reafon of the < Spi- 
ders Fabrick, and maketh pretty Obfervations on the hunt- 
ing Spider, and other Spiders and their Webs. And what 
he notes of a Flea , Loufe , Mites, and Vinegar- worms, 
cannot but exceedingly pleafe the curious Reader. 
Having difpatched thefe Matters, the Author offers 
his Thoughts for the explicating of many Phenomena of the 
Air , from the Inflexion , or from a Mult ip lie ate Refracti- 
on of the rays of Light within the Body of the Atmojphere , 
and not from a Refra&ion caufed by any terminating fu- 
perfides of the Air above , nor from any fuch exactly de- 
fin’d fiiperficies within the body of the Atmojphere : which 
eonclufion he grounds u£bn this , that a medium , whofe 
parts are unequally denfi , and mov’d by various motions 
and tranfpofitions as to one another , will produce all thefe 
vifible 
