(921 ) 
T:>t.Mentzelm^^ chief Ph>^fician to his EIea®raI Higbnefs of 
Brandenburg^ concerning rhe Experiments made upon a certain 
Scone found near Berlin in a Wood, called the Grm-ivald^ 
which Stone contained of Metcals, Irmdtnd Copper ^ of Metal- 
lin Juyces, Sulphur and Vitriol^ which Jay concealed in a GoUen 
Marc^pej wherewith this Stone abounded. To which Epiftle is 
annexed an Experiment made by the Author of it upon chat 
liquor which is contain'd in the Bladder of Gall ; in which, he 
Aith, having di'fTolved, fome years fince , fome ^kes rofatuwy 
the Green colour of the Bile was changed into a true Bkcd co- 
lour* The confiderationof which he judgethmay be beneficial 
to all Mankind. 
To that Chapter, wherein are delivered his Experiments up- 
on Mettals and other Minerals ^ he refers , for a ConcIuGon of 
this Traft, a Angular Experiment concerning lyks^ communica- 
ted to him in a Letter by Dr. Cafpar Marchius^ another of the 
prime Phyficians to the faid Eleflor : Tte fhort of which is this^ 
That the reddifih Colour, wherewith Tyles are tinged through- 
out, may be fofeparated from them, as that nothing of itflial! 
beleft in them : Which extraflingof the Colour by an Alem- 
bick from a body that had endured fo great a ftrefs of Fire be- 
fore, feems to the faid Dv*Mar<him an Experiment worthy con- 
fideration. 
V. Medicina Stat ica^^jr Rules of Health^originaUy written by San- 
6iQY'ms,noivEngli/hedby],D. London, 1 676,/;? r2o. 
T^His Ingeniousand Ufeful Traft , now appearing in Englijh^ 
is known to have been longfince publiflied in Latin by the 
famous Sani}ofiu^^ whofedefignin it vvas, by a certain Ballance 
to fdtisfie Intelligent perfons , who defire to have care of their 
health, that thofe things are true which he hath taught concern- 
ing the Weight of Infenfible Perfpiracion, and its Caufes, Timea. 
Advantages and Difadvantages , Excefs and Defedi:, as alfo 
touching the Air, Meat and Drink^ Sleep and Waking, Exercife 
and Reft, and the Affed ions of the Mind. 
As for the Ballance it felf, that is a Weighing Chair, which 
by being about a fingers breadth diftantfrora the floor ^ cannor 
cafily be ftiaken, and is fo framed, that when, by reafon of the 
Refefiion taken-in, we are come to the )uft weight and meafure 
prefcribed before-hand, the Chair immediately defcends a lit- 
tle I which defeent tells the perfon fitting in it ^ that he hath 
