Eo ee 
or 
‘The P RB er oA Co 
Ehret, ad My. Jacobus Van Heyfum, and executed with the utmoff judgment and Com- 
mand of Pencil, fo that be could hardly doubt but that true Copies of them would give great 
Pleafure to the Lovers of Botany, whom be has endeavoured to entertain with all the Variety 
be could introduce. 
SOME Ilenatured People, that love to find Fault with every Thing, have, he bears, ob- 
jetted againjt the Liberty he has taken, in giving in feveral of bis Plates, Plants, Flowers, 
and Fruits, that are not in Reality the Food of the Caterpillars therein exhibited 5 but as the 
&reatefi Part of the Caterpillars defcribed im this Work feed chiefly on the Oak, Elm, Black-— 
Thorn, White-Thom, Willow, and Nettle, all which are feparately veprefented in different 
Plates, it was judged unneceffary (and would certainly have been tirefom) to repeat thofe Sub- 
jects, as ofien as different Caterpillars are prefented to which they ferve for Food: and there 
fore, inftead of fo domg, the Author has enriched his Undertaking with fome of the moft beau- 
tiful Productions of Nature in the Vegetable Kingdom: But, however, has not forgot to place 
the Caterpillars, i moft of the Plates, on a {mall Specimen of the real Plant on which it feeds, 
as will be properly explained in the Account of each Particular Fly : and this Care, it is 
Loped will be an Anfwer to all unveafonable Cavils. : 
THE Piates are all drawn and etched with his own Hand, in a quite new Manner; 
whereby every Defign, when coloured, appears like a regular Piece of Painting 5 and the Flies 
are drawn and painted with the utmoft Exaétnefs, from as fine and perfect Specimens as can 
be bred. The common Method of amufing the Reader with long Accounts of the Colours and 
Markings of each Fly is avoided in this Work, as entirely necdles, when the Objects are 
truly reprefented before bis Eyes. : ee 
HIS Claffing of the Caterpillars will be found of great Ufe ; for if it be enquired what 
Fly any Caterpillar that may happen to prefent itfelf will produce, by obferving its Charatter 
you will eafily be fatished (if it is in this Collettion) and be likewife taught what its proper’ 
Food is, &c. Names are abjolutely neceffary to diftinguifo one Ely from another, and ena- 
ble the Curious in this Study to communicate any Obfervations they may make; which, without 
giving Names to the Flies, would be very difficult, if even poffible to be done, as they muft be 
greatly at a Lofs to make others perfectly underfand what Flies they are treating of. The 
worthy Members of the AuRELIAN Society, and feveral other mgenious Gentlemen, have 
been fo fenfible of this, that they, from Time to Time, have thought proper to befiow fome 
Namie on every Species that has come within their Knowledge. 
INDEED 
