( 43 ) 
come in a Fortnight to the Bignefs of Fig. and are very 
lively and active, and if they have any Fear, or if they be 
touched, they fuddenly roul themfelves up, and make as it 
were a Ball. A litde after they come to creep after the man- 
ner of the Silk- Worms that have no Legs^ with a bribk and 
very fwifc Motion. When they are come to their ufual Big- 
nefi they hide themfelves the moft they can, and bringing out 
of their Mouths the Silk, they make round themfelves a fmall 
Bag, white within as Paper, but without always durey and 
fourd with Dull. The Bags are to the Natural Eye of 
the Bignefs of Eg. 6. without magnifying. In other Two 
Week^ in the Summer-time, the Flea is perfedly form'd^ 
without that the Worm quits itsExttvta initsBag,as do the Silk 
worms,and as do all Caterpillarsjwhich leave in the fame their 
Exuvia, The Flea, fo long as it is inclofed in the Bag, is 
Milk white, although it has its Legs, but Two Days before it 
comes outfit becomes coloured,grows hard, and gets Strength, 
fo that coming fpeedily out, it ftreight leaps away. 
Hereunto annexed are the Figures of the Eggs, Fig, i. the 
Worm Fig. 2. the Bag Fig. and the Flea Fig. 4. but all of 
them magnified by the Microfcope. 
II. A Way to make Two clear Spirifuom Inflammahle Li^uorsy 
which differ very little in Tafie and Sm^U^ and being mixed 
together.^ do giife a fine Carnation Colour^ withont either Jenfibk 
Fermentation or Alteration, Communicated by Monfieur Geoffroy 
TO jnake the firft of thefe Liquors, put a fmall Handful 
of dryed red Rofes into a Glafs Bottle, pour oa them 
redified Spirit of Wine till it cover them an Inch. Let them 
infufe in the Cold all together in the Bottle for Four or Five 
Hour?, then pour off the Spirit of Wine, which will be clear 
and have no Colour. 
The Second Liquor is made by putting into fome good 
Spirit of Wine fome Drops of good Spirit of Vitriol, or Oyl 
of Sulphur, {o that fcarce can the Acid or Sour be difcovered 
by the Tongue. 
