C 194 ) 
h Jn ExtraSl of a Letter from Monfieur An- 
thony Van Leuwenhock to the Royal So> 
ciety, contawingthe Hijloryof the Generation 
of an Infe&^ by him called^ the Wolf. IFith 
Obfervations on InfeSis bred in RainrWater^ in 
Apple s^'i Cheefe^ &c. 
T H E J4^'olf is a fmall white Worm arm^d with ; 
two red Sheers or Teeth at the fore- part of its 
Head, wherewith it bores and feeds on the Grains of 
Corn, and makes its way through Wcod it felf. 
Having formerly often inclofed fom.eof thefe Worms 
.with fome Wheat in fmall Glafs Tubes ( which I car- 
ried in my Pocket in the Winter) I always found that 
they dyed before the time of Generation : Wherefore 
in the Summer I put fome of them with the Wheat 
/^hereon they fed in a Box, and obferved that one of 
them joyned fix or eight Grains together, lodging it 
felf-'in doe of them, the reft being Ukewife all hollow 
and eat our. The Worm fpins a Thread, wherewith it 
^jgyns the Corn together, and faftens it felf to Glafs or 
'\otherTmooth Bodies. When I put rhem in Boxes, they 
lat ilvAfwzj put ; and when I put t hem in Glaft Tubes, I 
they bo|:^^i^^^^^ the Corks ihnt ftopt the Glafs Tubes; 
XtQ#>ei^ent\V;iViah, I covered the Cork with Sealing-wax, 
and to give them Air, put a very fmall Glafs Cane thro' 1 
the Wax and Cork. F/g, i. ABCD is the Tube ftopt 
with Was and Cork, EG and FH two fmall Pipes 
^g^afHng through the Cork and Wax. The Beams of the 
.^Granaries Jikewife are all eaten. For they leave the Ccrn,; 
.^A.ahd creep , up the Walls to the Timbers of the Ceilingj 
where they faften themfelves and remain till, their 
Change. j ] 
Th^ 
