1048 PEOCEEDINGS OF THE THIRQ ENTOMOLOGICAL MEETING 



The plate when inked is passed through a machine with a sheet of papet, 

 the result being that all the ink is taken up by the paper. 



87.— LANTERN SLIDES. 



We gave an exhibition of lantern-slides of Indian Insects the other 

 night. Has anybody anything to say on this subject ? Our main 

 difficulty at present is to get them coloured. The arrangement which 

 we used to have has broken down and we have great difficulty in getting 

 this work done satisfactorily. 



Cannot your artists do it ? 



They could only do it in their spare time. We always have more 

 work for the artists than they can get through. After our owii arrange- 

 ment fell tlurough I arranged with the Calcutta Phototype Company 

 to have this work done in Calcutta so that the finished coloured slides 

 could be supplied by them and Mr. Slater got hold of a man who said 

 he could do them ; after about three months this man only produced 

 about half-a-dozen shdes and, on inquiry, it w-as found that he had sent 

 these to Japan to be done. So we did not progress much as regards 

 getting them done locally. If any of you know of anyone who would 

 be prepared to colour these slides, we should be glad to be informed. 



What do you pay for colouring a slide ? 



One rupee and eight annas. It takes time and care but the materials 

 are not costly. 



88.— NOTE ON THE DECDIAL METHOD OF SUBJECT INDEXING 

 ENTOMOLOGICAL LITERATURE. 



By C. F. C. Beeson, M.A., I.F.S., Forest Zoologist. 



Everyone who has to deal seriously with entomological literatiu-e 

 adopts some method of recording references to the subjects in which 

 he is interested or expects to be interested. Each of us has apparently 

 evolved a system that suits his own immediate requirements, and in 

 consec|uence there is considerable variety in, the systems now in use ; 

 e.g., some use a card catalogue with a dichotomous or numerical index ; 

 some prefer entries in specific and general ledger files ; some use loose- 

 leaf notebooks and others iixterleaved publications. 



It seems to me that if entomological work in this country is to be 

 centralized or co-ordinated it is also desirable to centralize or standardize 

 methods of recording references to literature. It would be of immediate 



