(796) 
Signor Settalla at Milan caufeth to be made a Burning- 
glafs of [even Foot in Diameter. He pretends to make it 
Burne at the diftance of fifty Palmes ( which is about 33 
Foot.) 
observations 
Concerning Cochineel^ accompanied with feme fugge (li- 
ons for finding out and preparing fuch like fub- 
ftances out of other Vegetables. 
TT is generally believed , that the Cochineel comes out of a 
J[ fruit called the Prickle-pear 9 bearing a leafe of a flimy nature , 
and a fruit bloud-red and full of Seeds, which give a Dye al- 
moft like to Brafiletto wood, that will perifli in a few dayes by 
the Fire : But the In\e£t engendred of this fruit or leaves, gives 
a permanent Tin&ure, as is generally known. 
There grows a Berry ( by report ) both in the Bermudas and 
New-England, call'd the Summer- 1 (land- Redweed i which Berry 
is as red as the Prickle-Peare, giving much the like tindture; 
out of which Berry come out firft Worms, which afterward turn 
into Flyes fomewhat bigger then the Cochineel-Flye, feeding 
on the lame Berry : In which we read, there hath been found 
a colour no whit inferior to that of the Cochineel- Flye, and 
as to Medicinal vertue much exceeding it. 
'Tis hereupon ofler'd to confederation and tryal, r. Whether 
this Bermuda-Bmy might not grow in England < 2 Whether 
out of the Berry of Brafiletto -wood the like infecft m:ght not be 
obtained in refpeft of colour or tindiure < 3. Whether a fading 
colour, yielded by certain Vegetables , might not be fixed by 
caufing fuch a Fermentation in the Concrete ? as may engen- 
der Infe&s giving the tindlure of its original., which will hold in 
Grain? 
For the obtaining of the lafl we find the following dire&ions, 
VVhereas Vegetables of Tindiure are either Herbs, or Woods, 
or Berries and other Fruits to breed Ioiefis out of Herbes^ dry 
them;, (tor fo they yield the beft tincture $ ) otherwife ftamp 
them^ and let them dry, rill they will fuffer no more juyce to run 
from them, (this in the Sun or in a proportionable heat: ) or 
if 
