128 
MIcROGRAPHIA. 
the fides of the containing Jar: others ftanding up, or growing an end, 
out of the bottom, of which I have taken notice of a very great variety, 
But above all the reft, it isa very pretty kind of Germination which is af- 
forded usin the Silver Tree, the manner of making which with Mercu 
and Silver, is well known to the Chymi(ts, in which there is an Ebullition 
or Germination, very much like this of Mufhroms, if I have been rightly 
inform’d of it. 
Fourthly, I have very often taken notice of, and alfo obferv'd witha . 
Microfcope, certain excrefcencies or Ebullitions in the fnuff of a Candle, 
which, partly from the ——e of the fmoaky particles as they are car- 
ryed upwards by the current of the rarify’d Air and flame, and partly 
alfu from a kind of Germination or Ebullition of fome actuated unctuous 
parts which creep along and filter through fome fmall ftring of the Week, 
are formed into pretty round and uniform heads, very much refembling 
the form of noaded Muthroms, which, being by any means expos d to the 
frefh Air, or that air which encompaftles the flame, they are prefently 
lick’d up and devour'd by it, and vanith. 
The reafon of which Phenomenon {eems to me,to be no other then this: - 
That when a convenient thread of the Week is fo bent out by the fides 
of the fnuff that are about half an Inch or more, removd above the 
bottom,or loweft part of the flame,and that this part be wholly included 
in the flame; the Oy! (forthe reafon of filtration, which I have elfe- 
where rendred) being continualy driven up the fnuff, is driven like- 
wife into this ragged bended-end, and this being remov’d a good 
diftance, as half anInch or more, above the bottom of the flame, the 
arts of the air that pafles by it, are already, almoft fatiated with the dif- 
lution of the boiling unctuous {teams that iflued out below, and there- 
fore are not onely glutted, that is, can diflolve no more then what they 
are already acting upon, but they carry up with them abundance of 
unctuous and footy particles, which meeting with that rag of the Week, 
that is plentifully fill'd with Oyl, and onely {pends it as faft as it evapo- 
rates, and not at all by diflolution or burning, by means of thefe fteamy 
parts of the filterated Oy] iffuing out at the fa 
inclos‘d with an air that is already fatiated and casnot prey upon them 
nor burn them, the afcending footy particles are ftay'd about it and fix'd, 
foas that about the end of that ragg or filament of the fnuff, whence the 
greateft part of the {teams iffue, there is conglobated or fix’d around 
and pretty uniform cap, much refembling the head of a Mufhrom, which, 
if it be of any great bignefs, you may obferve that its underfide will be 
bigger then that which is above the ragg or ftem of it 3 for the Oy] that is 
brought into it by filtration,being by the bulk of the cap a little fhelter'd 
from the heat of the flame, does = that means iflue as much out from be- 
neath from the ftalk or downwards, as it does upwards, and by reafonof 
the great accefs of the adventitious fmoak from beneath, it increafes moft 
that way. Thatthismay be the true reafon of this Phenomenon, | could 
produce many Arguments and Experiments to make it probable: As, 
Firft, that the Filtration carries the Oyl to the top of the Week-at leaft 
| as 
es of this ragg, and being ' 
