PREFACE. 
Vll 
that a critical inlpeftion will deteft, in feveral places, a ftrokc or two Id's 
accurately and exadly managed, than might have been expeclcd. Yet 
although the figures are not quite fo elegant, as the rules of finiflied draw- 
ing, and the delicacy of the modern times require, yet I have been careful 
as to their general accuracy : had they been more elaborate, the expence 
as well as to the condudors, as to the purchafers, muff have been far 
greater. 
The method in which I have conduced this work, muft be left to the 
judgment of the reader; fince what I may have regarded as full and clear 
in my own opinion, I do not confider as beyond improvement; for 
which reafon, I purpofe to fupply more fully, by an appendix, whatever, for 
the fake of brevity, I may have here omitted. 
No one can doubt but that there muft be more fpecies of Spiders than 
are here given. In order, therefore, that all may, as far as can be, have 
their full hiflory, I earneftly entreat all who are addided to this fcience, 
to deferibe each new genus and fpecies, as foon as difeovered, together 
with all the particulars which are fhewn in this work to be neceffary; and 
to delineate the Spider^ and fend the drawing, together with the animal 
itfelf to me. I fhall take care to attribute each to its proper difeoverer 
by name, which fhall be commemorated with the animal in the refpeclive 
fupplement. 
