i '420 ] 
. ^ <■ > 
• ' 1 • •' J ■ * v . . 1 , U \ - -r\ . . .. •'* “ . - •• 
Libra, ut mem or ant, beftfem f ext arias addet , 
Sen pur os pend us latices, feu dona Lyai, 
Addunt femiffem Libra lab ent is Olivi, 
S e libra mque fernnt mellis fuperejfe bihbri. 
'W •" . * -4 
That is to fay, that the Sextarius of either water ot 
wine weighed 20 ounces, the lame meafure of oil 18, 
and of honey 30. Their fpecific weights were there- 
fore in proportion as 1.0, o and 1.7, exactly 
agreeable to what Villal andus determined about 
the beginning of the laft century : Yet was this au- 
thor himfelf fenftble thatthefe were not to be look’d 
upon as very nice experiments. 
Hac tamen ajfenfu facih funt credit a nobis. 
N unique nec err antes undis labentibus amnes, 
N ic merfi puteis latices, aut fonte perenni 
Manantes, par pondus habent .* non denique vina, 
Qua campi ant colies nuperve aut ante tulere, 
Quod ttbi mechanica promptum eft depromere 
Mufa. 
After which he proceeds to deferibe a good pretty 
inflrutnent for the ready finding of the different 
fpecific gravities of fluids, and fhews how thofe of 
folids alfo may be hydroftatically difeovered. And fo 
much (hall fuflice for what I had to mention from the 
antients relating to this fubject : I now come to 
thofe who have written within thefe laft hundred 
and fifty years. 
Francis 
