The Observations of Mr. Hook for finding out the Motion of the Earth are very good, and of great consequence; but they must be continued, to see, whether in the course of one or more years the Parallaxes do regularly answer to the Annual Motion of the ...

This being the same Comet with that, taken notice of in Numb. 35. of these Tracts, and our account, then given of the same, being likely to receive some advantage and light from these Observations, made in Brasil, and but lately come to our hands, we ...

Every part of the Oak-tree, of what age or growth soever, and all Oaken Copice-wood, of any age or size, being cut and procured in Barking time, will tan all sorts of Leather as well, at least, as Bark alone.

I Herewith send you the <italic>first</italic> part of our <italic>Tables</italic> of <italic>Snails</italic>, and some <italic>Quære's</italic> upon that subject; also the lively figure of each Shell for illustration, done by Mr. <italic>Lodge</italic>. ...

I Cannot but impart unto you something lately hapn’d in my family, which is, That, having taken two months ago a Nurse for my little girl, (since dead;) the boy of that Nurse, having been on that occasion weaned, did, by repeated sucking the breasts of ...

The first Treatise of this Book handling of Niter and the Nitro-aëreal Spirit, premiseth a History of Niter, and concerning it teaches; What are its component parts; How ‘tis produced in the Earth; What the Air contributes to its generation, and what the ...

In Numb. 104. p. 70. l. 29. r decay. In this Numb. 105. p. 90. l. 18. r. for the annual. p. 95. l. 14. r. The button V. ib. l. 18. r. upon it; b, the Hammer, p. 96 l. 15 r. the hollow place, r, in fig 1. ib. l. 17. r hole,1. 2. 3. 4. in fig. 2.