In _Num._ 9. of these _Transactions_ were publish'd the _Schemes_ and _Descriptions_ of certain Ways of _Sounding the Depth of the Sea without a Line_; and of _Fetching up Water from the bottom of it_; together with some Experiments already made with the former of these two Contrivances. The Author of the French _Journal des Scavans_ found good, to insert them both in his _Journal_ of _May_ 3. but in another of _May_ 24. intimates, that the said _Schemes_ and their _Descriptions_ are not very clear and intelligible (he means, that they were not well understood by _French_ Readers) proposing also some Difficulties, relating to that Subject, and esteemed by him necessary to be satisfied, before any use could be made of the said Instruments. Upon this occasion, the Author of these _Tracts_ thinks fit, here to represent, {229} _First_, That _Englishmen_ and such others, as are well versed in the _English_ tongue, find no difficulty in understanding the descriptions of these _Engines_, nor in apprehending their structure, exhibited by the _Figures_, especially if notice be taken of the Emendation, expressed at the end of _Num._ 10. about the misgraving the _Bended end_ of the _Springing Wire_ (which it seems has not been noted in _France_, tho' the said _Num._ 10 is known to have been seen there a pretty while before their _Journal_ of _May_ 24. was publish'd). And as for the particular of the _Bucket_, fetching water from the bottom of the Sea, both the _Figure_ and the annexed _Description_ thereof are so plain and clear, that 'tis some wonder here, that any difficulty of understanding them is pretended by any, that hath but ordinary skill in _Cutts_ and the _English_ language. Mean while, that way, which the _French_ Author recommends for this purpose as more simple, _Videl. a Brass-Pump with double Valves_, is not at all unknown in _England_, nor has bin left untried there; but was found inconvenient, in respect that the Valves in descending did not fully open, and give the water a free passage through the Cavity of the Vessel, nor in ascending shut so close, as to hinder the water from coming in at the top: Whereas by the way proposed in _Num._ 9. both is perform'd with great ease and security.