( So ) 
Inches high, and three Inches and a half Diameter, 
containing three glafs Figures : In that very Inflant, and 
in the Space of a Second of Time, I found all the Wa- 
ter changed into Ice , when in that Time two of the 
Figures had reached very near the Bottom, but the 
third, as well as they, fixed in the Middle of the Glafs, 
furrounded with Ice as tranfparent as the Water itfelf 
before it congealed. This is, in a few Words, the 
Matter of Faft ; but the Reafon why the whole Body 
of Water, in fuch a Ihort Space of Time, Ihould turn 
into Ice, is, in my humble Opinion, not fo eafily to be 
accounted for ; and rather than offer any Solution of 
mine, fhall leave the fame to that ingenious Gentleman 
Dr. Defaguliers. 
In September laft I placed fome Leeks of tulips, 
and other Flowers, after fuch a manner in Water as 
the Figures in Tab. II. reprefent j at which Time I 
put into each Glafs two Grains of Saltpetre. Thefe 
Glaffes I kept in my Study, fometimes on a Shelf, at 
other times before the Window. In a Fortnight’s 
Time I begun to find that they ftruck new Roots ; 
the latter End of November they put forth Leaves, 
and in January they all flowered, as well as if they 
had been on a Garden-bed ; whereas in Gardens 
we feldom fee, in this Country, 'tulips before the 
latter End of May, and this Year fcarce fo foon, 
the Ground being yet covered with Abundance of Ice 
and Snow. 
Though thefe Experiments feem to be calculated 
for nothing but Delight, yet I think they have fur- 
nilhed me with fome Lights, as to the Rife of the 
Sap in Plants, which I will forbear mentioning till 
tlxe 
3 
