130 MicroGRAPHIA. 
tapering form; but whereas all Vegetables are obferv’d to thoot and 
row perpendicularly upwards, this does fhoot or propend directly 
_ Sth 
By which laft Obfervables, we fee that there may be a very pretty 
body fhap'd and concreeted by Mechanical principles, without the leaft 
fhew or probability of any other feminal formatrix. 
And fince we find that the great reafon of the Phenomena of this pret- 
ty petrifattion, areto be reduc’d from the gravity of a fluid and pretty. 
volatil body impregnated with ftony particles, why may not the Phezo- 
mena of Ebullition or Germination be in part poflibly enough deducd 
from the levity of an impregnated liquor, which therefore aa | 
larly afcending by degrees, evaporates and leaves the more olid and 
fix'd parts behind in the form of a Mufhrom, which is yet further diverfi- 
fy'd and fpecificated by the forms of the parts that impregnated the li- 
~ quor, and compofe or help to conftitute the Mufhrom. 
That the foremention’d Figures of growing Salts, and the Silver Tree, 
are from this principle, I could very eafily manifeft; but that I have not 
now a convenient opportunity of following it, nor have I made a fuffici- 
ent number of Experiments and Obfervations to propound, explicate,and 
prove fo nich a Aeeeer fs Mes 0 Mufhroms : ons though 2d con- 
trary principle to that ofpetrifyd Iceicles may be in part a caufe; yet 
raat think, that there is fomewhat a ASA skal bers caufe, 
ough yet Mechanical, and poflible to be explain’d, 
, We therefore have, further to enquire of it, what makes it tobe fucha 
liquor, and to afcend, whether the heat of the Sun and Air, or whe- 
ther that of frmentiation and putrifattion, ox both.together 3 as alfowhe- 
ther ther. be not a third or fourth; whethera Saline principle be not a 
_ ¢ agent in this buf eat wellas heat 3 penn 3 2 0 
may not be alfo a confidersble coadjutor in the bufinefs. Since we find 
that many pretty beards onftirie of the particles of Silver may be prec 
pitated upon a piece of Brafs put into a folution of Silver very. muchdi- 
luted with fair water, which look not unlike a, kind of mould.or hoar 
upon that piece of metal ; and the hoar froft looks like.a kind. of moulds 
and whether there may not be feveral others that do.concurrto the pro- 
duction ofa Mufhrom, having not yet had. fufficient time to,profecute.ac 
cording to my defines, I muft referr this toa -better opportunity of my. 
own, or-leave and recommend it to the more diligent iry and.exa- 
mination-of fuch as can be mafters, both of leifure and conveniencies for 
fach an Enquiry. ; | 
_ And. in the mean.time, Iimuft conclude, that as far as T have beenable 
to look into. the nature of this Primary. kind of life and. ciaeiGon Lae 
not find the leaft probable argument to perfwade me there.is any other 
concurrent, caufe. then fuchas is, purely, Mechanical,and that the effects 
or productions are-asneceflary upon the concurrence, of thofe. caules. a3 
that a Ship, when the Sails are, hoift up, and. the Rudder is. fet to,fucha 
pofition,fhould, when the. Wind. blows, ‘be mov’d in fuch, 2. way, or counle 
to 
