hcdid not pretend to exa61:ners,but only to excite the carefd- 
pefs of others in the feveraldiftant places, and chiefly fuch, as 
can have the afliftance of a Whed-baBance perfectly filled : with- 
out both whieh aids he hopes not to obtain all the benefits and 
myfteries of this Invention. 
This being thus briefly intimated , the Account of the Ob- 
fervations thcmfelves, as they were extracted out of a late Let- 
tcr of the fame Pcrfon, are,as f ollowes : 
1. As I have fitted and filled the Single Cane, I can fay in the 
general. That I have not yet found any inch infalhble Progno- 
itick of thefe changes of weather, which do follow a long lere- 
nity,or fetled weather. And perchance in brighter Climats it 
maybe conflrantly infallible. In thefe lSl9rthern IJlands , the 
Clouds arefo fliort, and narrow, and by fickle changes are 
fometimes eaiptied upon us,fomctimes fo neer^as may make fo 
little variation in the weight of the whole Atraofphere of Air, 
as may fometimes deceive us, or (mother and hide from us the 
caufes of fixednefs^or of changes. I wifli I could fee a good Ca~ 
lender ov journal tdktnm Tangier, and in forae o£ our Northern 
and raoft Southern parts of America. 1 have ftore of Hygrofcopes 
fTvffrnrrAnpc w*.. T fi * ^f divcrs kiuds 5 and I do remark 
to difcovcr the degrees of M^i- ^'^^ 1 wcatnigs of Marble, 
ftnre andDronght of the Air. many Other famed Progno- 
fl:iGks,as I can hear ofFjbut can find 
nothing (o neerly indicative of the change of weather , as this 
Ballance,^ Thofe^^thers areotten changed by Dews, which do 
not at all alter the BaUance , nor, alter the ftate of the weather : 
And the open Weather-glafs is known to fignifie nothing at 
certainty^having a d6ubIe"obediep.cc t;o two Maft^rs^f^metimes 
to thcWj^tgh%ef tht4^^^^ He4hz% die fer.yice i"^ com- 
2. And' in further coBfirtnatipti of this Note, I may adde to 
the former, That' in Jmary Iaft: i(^<J|,from the foajrif^^ and more 
cjpc cially^ff am^the /^t^^^^^^^^ it continued ve^^ 
ry dark^ lp;tj^'trt alf men, expe<3:€d daily great rain ; ytzAic JUer- 
held {fjer y high,«c6rto the greateft height; And though in 
thofc daies fometipbes thick mifts arofe.and fome fmall rain fell, 
yet the ^ic{ filverhdd at a great height : which did indicate to 
me, there could then be no great change of weather. As the fmall 
ram felJ^ it ycilded fome what, not much 5 and that does more 
con- 
