. 
[ xvii ] 
the Worms, that to which the Tail belonged, wanted 
Matters of another Confequcnce ; that Part had loft 
not a Head only, but the Parts of Generation alfo 
of both Sexes 5 which in thofe Creatures are placed 
not very diftant from the Head : And to reproduce all 
thefe was the Work of fome Months 5 it has, however, 
in many Inftances, been done after that Time ; and 
feveral of thefe hinder Parts of W orms have again 
become complete Worms, having each both a Head, 
and Male and Female Parts of Generation, and in as 
complete a Manner, as the whole W orms had before 
their Sedion. Tho’ many, indeed, have died during 
the Operation, before the Rep rod ud ion was made 
complete: Yet, as in various Inftances, where proper 
Care has been taken, the Experiment has fucceeded 5 
It is equally to be regarded, as if the making it re- 
quired neither fo long Time, nor fo much Care. 
This general Account of what is relating to this 
Subjed, in the Preface to Monfieur Reaumur ’ s new 
Volume, I hoped might not be difagreeable to the 
Company, as it might in fome meafure gratify their 
prefent Curiofity, till this Preface itfelf, and Monfieur 
Tremble/ s own Book, fhall be in every Body's 
Hands. 
F I N I S. 
