oe Rk KR Ooo 
5 Oyl being the Profeffion of the Author of this Work, be frequently found bim- 
y, [elf at a Lofs, in the Courfe of bis Employment, to underfland with Cera 
oF BY tainty what Colours would contraft with and {et.off each other to the beft Ad~ 
we ccye vantage, and perhaps had fill remained under the fame Difficulties, had he 
OSTREZAS wit been led by Accident into the Means of learning all this from Nature, 
which undoubtedly is the beft Infiruttor.. 3 
IT happened that a Friend invited him one Evening, to bear him Company to a Society naa 
med the Aurgrian: the agreeable Purpofe of which is, to become acquainted with that 
Part of Natural Philofophy which relates to the Generation and Properties of Infects, of 
which they have a fine Collection, And here he firft Jaw fuch Specimens of Nature’s admiras 
ble Skill in the Dilpofition, Arrangement, and contrasting of Colours (particularly among ft 
the Moths and Butterflies) as ruck him with Amazemem, and convinced bim, at the fame. 
Lime, that ftudying them would turn greatly to bis Advantage. 
WITH this View be defied to become a Member of the Aurexti An § OCIETY, and 
foon after had the Honour to be admitted, when, by his own Diligence, together with the Zene= 
VOUS 
