32 Directions jor collecting 
Do not the Colours of Bodies alfd; depend 
on the Arrangement of their Particles, for 
the more or lefs ready Reflexion, Refrac¬ 
tion, Tranfmiffion, or Retention of the 
Rays of Light ? 
CHAP. VI. 
Directions for making a Collection of the So!u-> 
tions of Salts zz/zz/Saline-Sobstances, 
and preferving them always in Readinefs to 
he examined by the Microfcope* 
A S the Curious may be defirous to 
colled and keep by them the feveral 
Sorts of Salts mentioned in this Treatife, 
whereby they may at any time amufe them- 
felves or entertain their Friends at a Mo¬ 
ment’s Notice; I fhall put them in a Way 
that will entirely anfwer this Purpofe, foun¬ 
ded on my own Experience. 
Let a Drawer or Box be made three 
Inches in Depth, ten Inches wide, and 
fourteen Inches long in the Clear : at about 
an Inch and a quarter from its Bottom 
place a thin Board of the exad Length and 
Width of your Drawer, horizontally, on 
four little Pillars faflened in the Corners $ 
this Board having firft of all round Holes 
cut through it, in Rows, of a Size to re¬ 
ceive Glafs Phials that hold one Quarter 
