(813)
Numb. 41.
PHILOSOPHICAL
TRANSACTIONS.
Monday, Novemb. 16. 1668.
The Contents.
An Account from Bristol of some observations made in Hong-road this present year, by way of Answer to some of the Queries concerning the Tydes, recommended No. 17. & No. 18.An Extract of a Narrative communicated from Sevill, of 0bservations made in a late Voyage from Spain to Mexico, concerning the Minerals of Mexico, and particularly the exact and perfect way of separating the Silver from its ore by Mercury, together with divers other Curiosities, Natural and Chymical.Continuation of Dr. Wallis's second Letter on the printed Paper of Franciscus Du Laurens.An Account of two Books:I. Tractatus duo, prior de RESPIRATIONE; alter de RACHITIDE, A. JOH. MAYOW, &c. Oxon. 1668; in 8°.II. A Discourse concerning PHYSICK, and the many Abuses thereof by APOTHECARIES. London, 1668, in 8°.
An Account of some observations, made this present year by Capt. Samuel Sturmy in Hong-road within four miles of Bristol, in Answer to some if the Queries concerning the Tydes, in No. 17. & No. 18.
I Have observed, that our Annual Spring-Tydes do happen in March and September, either at the Tyde next bcfore the Suns Ingress into the Æquinoctial points of Aries and
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