16 INTRODUCTION. 
There should be some spare pages at the end of the register for 
occasional notes. For instances, after a district has been well worked, 
a list of all species found in it should be made and the extent of the 
district explored should be accurately stated. 
IDENTIFICATION. 
Most of our large towns and many of the smaller ones boast of 
some sort of museum where British shells have a place, and should 
any stranger wish for further information than can be obtained 
through the glass cases, the curator will always be ready to give 
courteous attention to his enquiries. It is to be regretted that in many 
museums minute shells are often placed at a distance of several inches 
from the surface of the glass case. The curators of the Manchester 
Museum at Owens College, however, have set a good example by 
bringing all small objects close to the glass so that a pocket lens may , 
be used to examine them. 
It may not be out of place to mention here that the referees of the 
Conchological Society are always ready to identify and name any 
shells or slugs sent to them. Specimens thus sent are carefully 
returned if desired, and it should not be forgotten that in all cases the 
exact locality should be specified. 
EXAMINATION OF MINUTE SPECIES. 
A good pocket lens is a szvze gud son to determine small species 
and examine the sculpture, etc., of the larger ones. 
Working with minute species by artificial light is often trying, 
especially if the light is bad, but this may be remedied by fixing a 
large lens so as to concentrate the light upon the object, and then with 
another lens examine the shell thus illuminated. 
A CAUTION. 
A caution may be useful to the collector not to admit into his 
collection any shell whatever without the most conclusive evidence of 
its being British, I have repeatedly been presented with foreign 
