the top, in what proportion of time and fwi ftnefs it rife* . He 
feems not to have confider’d^ that in this Experiment, the times 
or thedeicent and affent are both taken , and computed toge- 
mer > fo that, for this purpofe, there needs not that nicety "he 
diicoiirfes of. . 
Fourthly , Whereas 5 tis farther excepted, That this way of 
Sounding depths is no new invention jThe anfwer is ready, that 
neither is it pretended to be fo,in the often quoted TraU j it be- 
ing only intimated there, that the manner ot performing it, as 
ds in that place reprefented and deferibed, is new. 
Lafily, To redfcifie the faid Author's miftake, as if the inftru- 
ment of Fetching up water from the bottom of the Sea, were 
chiefly contriv d, to find out, Whether in fome places of the fea 
any S weet water is to be met with at the bottom: There will 
need no more, than to diredt him to the Book itfelf Num. 9. 
where p. 149. towards the end, the Fir ft ufe of this Bucket is ex- 
prefid to be, to kno w the degrees ef Saltnefs of the water accor- 
ding to its nearnefs to the top or bottom^or rather to know the 
conflitution of the Sea-water in fevera! depths of feveral Climate 
which is amatter, much better to be found out by Triad, than 
Difcourfe. Neither is it any where argued in that Book ( as the 
Fnnch lournalx nfinuates ) that, becaufe fweet water is found at 
the bottom of the Sea of Baharem, therefore it muft j but ouly 
that it may , be found fo elfewhere. And fince the fame lournal 
admits, that thofe Sweet water- fprings, which yield the fweet 
water, that is found at the faid place, have been formerly on the 
Contintntjizx enough from the fea, which hath afterwards covefd 
them,* It will be, J ris prefum’d, lawful to ask, Why in many o- 
ther places there may not be found the like ? And befides, how 
we do know, but that there may be in other parts, Eruptions of 
large fprings at the bottom of the Sea, as well as there. 
Printed with Licence for John Jl/artyn, and James Alleftry , 
Printers to the Royal Society. 1 666. 
