17 
were evidently lying about in more or less close proximity 
to the pin bearing the reference number. The wings were 
then brought into sets and gummed to pieces of card, on 
the under sides of which are to be found references to Con- 
vocation and other indications of University life. But in 
assigning these sets of wings to their reference numbers 
mistakes were occasionally made, and they could only have 
been avoided by the means which have now availed to 
set them right in, it is hoped, nearly every case—viz. by 
a critical comparison with Burchell’s African Catalogue. This 
was written before 1825, when the specimens were in com- 
paratively good condition ; and it represents the arrangement 
of individuals into species by a man with the intense interest 
of a naturalist and the eye of an artist. The separation into 
what he considered to be species is clearly shown; the reference 
numbers of additional individuals of the same form being 
always “inset” to the number of the first individual. Not 
only have errors been corrected by this means, but species 
have been determined from the most hopeless fragments. For 
example, a part of a patternless hind wing (right side) of 
a small moth was found still attached to the reference 
number “1209.” The catalogue showed this number, “inset ” 
to “1208,” borne by a moth still quite recognizable as the 
Pyrale, Glyphodes untonalis, Hiibn. 
Another source of difficulty and loss of time has been due 
to the fact that the specimens were so widely scattered :—great 
numbers in the duplicates disposed in various directions ; the 
majority in the appropriate parts of the general collection, 
relatively few, but still a large number, in the wrong parts 
of it; many hundreds never incorporated at all, but kept 
separate in old boxes and in parts of three very old cabinets, 
Three of Burchell’s original boxes were found untouched, two 
containing his British Collection and one the duplicates of his 
African Collection. A great many of the Lisbon specimens 
were found, probably untouched, in a similar box, but others 
had been incorporated. In many cases specimens which illus- 
trated each other were found in entirely different places. Thus 
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