thoughts of it J and do^iicltnow bttt fuppofitively rfllflqni(h 
them. But having lately , in reading Td$henius'% Hiffocr.chj- 
ffiicus C^tv^^y recommended by your fdf in N*. yo. ot your 
TratffaltJ) found c. i6, fomevvhat relating to this matter I 
began by the encouragement of his authority to refume feme 
Conjedures touching tfee fame, which I had , if not abando- 
ned 5 yec kept fupprcft in fihnce, whi^h indeed are of ano- 
ther kind,but how true I yet know not, Wherefort I thoaght, 
it might not be very un-iccepable to you, if I defiied you, 
publickely to give notice of thefe Conjedures , that the Lear- 
ned may reafon and find out the truth of them 5 whence may re- 
fult no fewnorvery unufeful difcovery's for the increasof know- 
ledge , the benefit of manki nd , and the glory of the Creator 
of al'. In order thereunto I defire, you will propofe thefe ot 
fuch like Qjeries • 
I. Whether by Chymical refearches it wes ever yet or cm 
be found, that fuch waters as the above- faid, ever yielded ei^ 
ther a Vinous or an Acid, or any other fort of Spirits, that 
were either infiimmablc,orun-inflammibIe^ or flying over the 
Helra from the fire, 
2. Whether all thefe forts of Waters , when they are moft 
clofely ftopt up , and fo let ftand.or conveyed to lome diftance, 
doe not ice fall a fd imenc(moft commonly ) ydlo.v.'i/h , or 
of fome fuch colour , when they arc become effa?te in their 
vefTcIs. 
3. Whether, when they are let ftand only , and not moved 
by carriage , they do not fooner become caftraced , and fooner 
precipitace^n odn to the bottom i 
4. Whether fuch an Ochre is n^t found in all their Spring- 
heads , and Streams alfj> 5 but more in the Head than in the 
Streams,efpeciilly if iffuedther^^from to a good diftance. 
5. Whether it may not be found upon due 0:>fcrvation, that 
two Bottles of the faid wtters^w'^ereof the one b^mg induftriouf- 
ly ftoppedjthe other lef . uuft ^pc^ and bot'^ eqadly permitted to 
ftand ftill or equilly moved, will not equally loofe their vir- 
tues Mvdicall in the fame fpacs of time, and have thefamr pre- 
cipitated fedim-nt,and be of th fime tafte, colour, and aiike Ji- 
minifhc in quantity, with divers others fuch like circ mft i?icei f 
- ^ ^.Whc-s 
