432 ZOOLOGY. 
structure is learned and a system based on anatomy is established. 
As anatomical systems are unnatural, and anatomical characters 
very difficult to discover by the anezsthesiasts, they regard such 
systems with disfavor, although they may constitute the only cor- 
rect classification of bones, teeth, brains, ete. The analysts even 
find that species having very close specific relationships occa- 
sionally present different generic characters. This was proof 
positive to the anzsthesiast of the errors of the technical school. 
But it was still less to their credit that they laid stress on varia- 
tions and monstrosities, which were mere accidents. The fact 
that the analyzers believed in the development of species, showed 
their systems to be unnatural. The speaker did not take sides, 
but observed that in order to learn the relations of a species, he 
usually examined it first. 
- MICROLEPIDOPTERA. — I have read with much interest Lord 
Walsingham’s paper in the May number of the NATURALIST; 
and as I have given a good deal of attention to the Tinema and 
have received several letters recently as to collecting them, I wish 
to add a short note to Lord Walsingham’s paper. 
When one is at home or at a stationary camp, infinitely the best 
plan is to rear them from the larvæ and this is especially true of 
the leaf mining species. With such species as leave the mine to 
pupate, it is best to have a little moistened sand at the bottom of 
the wide mouthed bottle used as a breeding cage. oil. 
I have never found that the muscles were rendered rigid by . 
the use of chloroform for killing the insect, as suggested by Lord 
Walsingham, but I have found that the positions of the wings 
and palpi are so variable when the insect is killed by chloroform 
that they can not be safely used as generic characters. 
As the slighest denudation frequently renders the ident : 
of minute species impossible, and it is exceedingly difficult " 
them without some slight denudation, I do not attempt pr 
smaller species (Lithocolletidæ, Nepticula, ete.). For such pa | 
I use the ordinary “ deep cell” of a microscopic slide (small d 4 
shallow pill boxes will answer as well) laying a small ev 
cotton or cotton wool on the bottom and covering the 7 : 
with its top, or the cell with the ordinary glass cover rig” 
by a small gum-elastic band. For observation under gf a 
hold them in a small forceps by the legs. 
p 
