(11(57) 
of this prefent 2dmh , ia mild weather, nothing iffiied 5 but 
the weather chaagii^g and growing colder , it bled plentifully ^ 
Whici ' feems not well tocoafift with that Hypothefis; and mofi 
be better examnVd. 
Lait year, the 5th mij i\\o{ March v^iimAt the Experiments 
of the Bleeding o\ Poles ( held ps.rpendicular ) sc both ends^ in . 
Wiliow^Birchjimd Sycamore which may fo eafily and certain- 
ly be found to fucceed, in a great latitude both as to the big- 
nefs of the boughs and temper of the weather , in the beft Blee- 
ding (eafon, that there needs no fochexadnicenefs in the Ob- 
fervation of thofe particulars. The i ith of Mxrehy Roots of 
Birch^great and fmall , bled both ways > and about the fame 
time. Sycamore roots alfo. Of all which I doubt not^ but Dr 
Tonge is by t his time fully fatisfyed by his own Experiments, 
The fame Birch, which firft began to bleed the 3d of March this 
Year^bled 3 weeks fooner laft year. 
Tryal would be made^ whether Cold will diflTolve the Sap al- 
ready coagulated : Eifeitwillbe hard, in the Doctors Hypo- 
thefis , to give an accompt of the Trees dropping a new in Cold 
weather. 
It was laft Autumne obferv'd by our ingenious Friend Mr 
Martin Lifter J that upon the firft Froft, v^ hich hapn'd in No- 
vmber ^ a Sycamore bled copioiifly 5 fo that the 5ap cannot be 
faid to rife in January ^ but immediately ^after the Fail of the 
leaf^in this Tree. 
Our Experiments ^ which you have already printed, are moft 
true, and according to the Doftors Hypothefis , will very well 
agree with his. His Deduftions and Inquiries are very rational 
and well dcferve to be made pub ick. Various interruptions 
havehindred us from the diligent profecuting of thefe Experi- 
ments this Sping ^ which that I may more critically make here- 
after , I muft procure two Sealed Thermometers and two Baro- 
meters. I am &c, Dat» Middiecoa m Warwick-fliire March 
12. i6\h 
