Cp87) 
matter at ence. 
An Accomft of [ome Books. 
I. M ARC' M A L F IG 1 1 , Phil, & Mtd. Bononienfts 
DIS S E Rt A r I O BP/SroLiCA De B 0 M- 
BTCE^ Regu Soctetati dicata. Printed at London 
for lohn Martin and lames AUeftry Printers to the R. 
Society^ /;?4\ 
/ ■"^ He Occafion of this Curious and Laborious Difcoui fe will 
appeare from the Preface to it. The Book it ielf gives an 
Acomptof theProdudlion, Structure ^ Food, Growch^Sick- 
neffes, Workmanrtiip, Changes, Generation, and Death of 
the Silk-rvorm-y together with an accurate Anatomicall Def- 
cription of all , even the minuter parts of that lnk£t > and the 
varieties of them in the feverall Changes^ it undergoes ^ where 
yet the Author in llich particulars j which he finds himfelf fliorc 
oflfjOr not well fatisfied ui^with great modefty refers himfelf to the 
Afliftance and farther confideration of that Society , to whom 
he dedicateth this Epiftie. 
He begins with theEggs and hatching of theSilk- worms ^ ob- 
ferves the Changes of their Colour : thenproceeds to the growth 
ofthe Youn^ worm^ the various tryals in feeding it with divers 
other leaves but thofe of Mulbery'^s^their fickneffesand the prog- 
nofticksof them-, the cafting ot their skins, together with all 
the fteps and the whole manner of the fame. 
In the Anatomicall Obfervations of the ftruftureof this In- 
fed, he takes notice 5 among many other things, oi its eleven 
Rings or Incifures , and of how many fmall ones each of them 
is made up-, giving their fliape, difFerentfce, nature and com- 
pofition. Then goes on to the Wrinkles of the Body, the 
Head;, the Cranium, the Lip^ Chin, Eyes, Teeth ( cutting not 
by an up and down motion 5 but a laterall one) Hair, Leggs with 
theirdi&rentfhapes, articuhtioos, claws 5 together with dieir 
pofture and motion for Spinning. 
