94 The Connecticut Pomological Society 



us lots of good oranges. In erecting these tents it is, of 

 course, necessary to make an estimation of the cubic contents 

 so as to get a tent the right size. The really only valuable 

 part of this system would be the height, and the tent being the 

 exact standard shape it is an easy matter to calculate the cubic 

 contents. Another form of tent is that having w^hat they call 

 an extension hood. In that a big tree 22 to 24 feet in height 

 could be fumigated vv^ithout difficulty. The sides are all drawn 

 down taut so that the covering is tight over the tree, and then 

 the gas is applied. When this form of apparatus was being 

 developed it was quite a question as to how we were going to 

 get these over the tops of the trees, but a system has been 

 perfected so that even with the enormous box ten feet square 

 at the base, and with the extension hood, we can put it over 

 a tree; raise it, and drop it over the tree in two minutes. It 

 has worked very well. That was not entirely satisfactory, 

 however, so I started on another line this year, making a box 

 tent which I could throw around. It is constructed in sections 

 that are hinged together, and all that is necessary is to slip it 

 around the tree and fasten it, and with the extension hood, pull 

 it over the tree at the top. That worked like a charm, and 

 was satisfactory in every respect. I do not recommend that 

 system, however, except in extreme cases where it is necessary 

 to get over each tree. It was this box system which was used 

 on that orchard of 5,000 plum trees up in the Alleghany 

 Mountains, and it is shown in Fig. 12. There are fourteen of 

 these boxes. This entire orchard of 5,000 trees, besides about 

 2,000 peach trees, were fumigated, and your esteemed Mr. Hale 

 had the opportunity of being in this orchard at the time. Of 

 course, while one tree is being fumigated preparations can be 

 going forward for fumigating another. In a very short time, 

 the whole operation can be performed and costs less than six 

 cents per tree. 



This gives a general idea of the gas method. It is thor- 

 oughly satisfactory and thoroughly feasible in all orchards of 

 moderate size. For very large orchards I would advise the 

 utilization of some material other than gas. These materials 

 have been discussed from time to time, and some experiments 

 have been made with whale-oil soap, crude petroleum and 



