( 208-; ) mmk 6g. 
Beginning the Seventh Yearo 
PHILOSOPHICAL 
TRANSACTIONS. 
March 25. 1671. 
The CONTENTS. 
A Preface to the Seventh Tear of thefe t ra&s. A Solution of\ 
a Chorographical Vrobkmey given bj Mr, ]oha Collins. 
A^ Accomft of fome Mineral Obfervations tonchif?g the 
Mines of CoxmvdX ^;?^ Devon3 tpherein is defcribed the 
Art of training a Load^ the Art and Manner of Digging 
the Ore 5 and the Way <?/Drefling and Blowing Tin : 
Cpmmnnicaied by an Inquifitive Perfon^ thai was pmch com 
verfant in thofe Alines^ An Accomft of two Bookj : h 
PRODROMO vvero Saggio di alcuni Invent ioni nuove 
: ,fremef[eaU* ARTE ' MA E STRA diP, FrancefcQ : Lana 
€iel/a Compagnia di Jefi^ in Brefciaj 1670. in 4% IL Joh. 
Henr^ Meibomii de €E R EVlSlIS , Potikifque & £• 
hriamnibus extra VINVM aliis^ Commentarius '\ anr^ex» 
Libello Turnebi de Vino : Heln/Jladii 1668, in ^^.^ 
PREFACE 
To this Seventh years of diefe TranfaQions. 
For a Preface to theSev^uthTear of thefcTraBs^ivhich I am 
now beginnings 1 J/jal/ here recite a few lines ia/sCn cut of 
the Conch fton of Mr, Cowleys Propcfition for the 
Advancement of Experimental Philofophy ; where he di^iri- 
bntes to his CoIIedge ofrhilofophers their Ta^k in Four Bran- 
ches : Fir ft; To weigh ^ex amine and prove ail things of Nature, 
R r delivcr'd 
