(50 .TOT'HNAL OF KCOXOMIC ENT» »M( )I,( XJY LV()1. 2 



to use an outfit like this, making' it somethintc on the order of 

 a small greenhouse; possibly in sections, with simple wire sides and 

 screens, and with top of canvas or of prepared roofing', such as is 

 used for sky-liiihts. This will iiive us just about as near outside 

 conditions of temperature and moisture as possible. Would it not 

 serve every purpose of the insectary and even be better tlian the glass 

 house? I think it is a question which will bear considerable discus- 

 sion. I have been considering building such a house for our work out 

 of doors, and I should like to hear the experience of those here, par- 

 ticularly those in the Bureau of Entomology, where they have used 

 such a house, and also from the men who have had experience with 

 the insectary, as to whether it is absolutely necessary that we have 

 the insectary, since it is a matter of considerable importance and one 

 which, so far as I know, has not been much discussed in recent years. 



Mr. Burgess : Mr. President, since Professor Sanderson has men- 

 tioned the breeding outfit at the Clypsy Moth Laboratory, I want to 

 pass around a photograph of the house in which we breed beetles; 

 the one which he has described. This photograph was taken last 

 summer. The house was constructed with the idea of giving natural 

 conditions for rearing predaceous beetles which are being imported 

 from Europe to prey upon the gypsy moth. The canvas top was re- 

 moved this fall and we now have a large number of beetles in hiber- 

 nation in the wire cages set in the house. 



Mr. Slingerland : ]\Ir. President, I was brought up in the first 

 insectary ever built. I hav(^ always lived there, and want to continue 

 to do so. It may l)e that we can do as good work in a cloth insectary, 

 but I want a house that will hold the wind off. I want it for insect 

 photography, for we need more careful details in our photographs. 

 The out-of-door house is all right, and we want that too. but I am still 

 content to live in the first insectary. — the glass house. 



Mr. Webster : Mr. President. I have been wondering all the time 

 why Professor Sanderson didn't put his question the other way, — 

 "Can you get along without an insectary?" An insectary is a means, 

 and not an end. That is to say, it enables us to get results at short 

 range, that could by no possibility be obtained in any other way. 

 We have field cages scattered nearly all over the country; that is one 

 part of the investigation. Something new appears in the fall, and, 

 with an insectary, it is possible^ to run it through and get an outline 

 of the history of the insect l)efore spring, when we can take it up 

 in the field and simply use the information got through the aid 

 of the insectary as a guide. 



Coming back to the matter of nomenclature again, I want to dis- 



