( 2 4*9 ) 
fides, the point WXY feems to be much larger than the 
oppofite point WZY $ The occafion of which, as I fup- 
pofe, was that the point WZY lay undermoft, and near 
other Chryftalline Particles, whereas the point WXY lay 
uppermoft, and confequently admitted more freely the 
coagulation of its Parts. 
Fig. 7. ABCD reprefents another Chryftal, which ap- 
peared to be an uncommon Figure to the Eye of the 
Painter. 
Fig. 8.ABCDEF is another Chryftalline Particle, where- 
in the Hexangular fide CDE is very fhort, like thatllanc- 
ing part reprefented by EFABC, of which FAB runs in- 
to a much fhorter point in proportion than the uppermoft 
part does $ I obferved a great many other fuch Chryftal- 
line Figures. Now ’tis poffible that thefe Chryftalline Fi- 
gures, which are bent a little crooked, might be fo (haped 
at the time of their coagulating by my moving the Glafs, 
and laying it in fuch a pofture as is before mentioned; 
and which was alfo probably the reafon, that the point- 
ed part FAB had affumed that form that is reprefented 
in Fig. 8. 
I placed another Chryftalline Figure before the Painter , 
which was bigger than that reprefented by Fig. 5 • two 
fides of which were encompafled with, or rather there 
were coagulated upon them abundance of exceeding final! 
Chryftalline Particles leffer tharr thofe of Fig. 1. AB5 in 
thefe one could difeover but one finall point, fo that 
’twas impoffible for the Painter to give us a full view of 
fuch very finall Particles. 
Not content with the aforementioned Obfervations, f 
took anew two other Glafs Tubes, fomething larger than 
the former, into which alfo I poured Aqua Forth , and 
then threw in fome fine Silver j whereupon I whelmed 
the Glafs Tube upfide down, and placed it in warm Sand, 
to the end that the Aqua Forth fhould difiolve as much 
Silver as it was capable of j and after that this Aqua Forth, 
thus 
