1064 rilOCEEDINGS OF THE TUIED E^'TOMOLOGICAL MEETING 



Janjira, Nawanagar, Porbandar, Morvi, Jafrabad, and Bhavnagar 

 States have not considered it necessary to introduce restrictions, as 

 living plants are usually imported through Bombay. The danger of 

 importation of pests through sea-ports other than the principal ones in 

 British India is comparatively small and it is to be hoped that no such 

 cases will arise. As regards other land frontiers, no serious danger is 

 anticipated at present and therefore no restrictions have been imposed. 

 In the case of plants received from overseas, they arrive either (1)^ 

 on freight, (2) by post or (3) brought in by passengers. 



Packages brought in on freight are necessarily landed through the 

 Customs Department to whom the necessary statements of content's 

 have to be made. It is probable therefore that all such cases of importa- 

 tion are dealt with as a matter of routine. In the case of living plants 

 which are to be fumigated, the packages containing them are opened 

 and placed, with all packing materials, in a fumigation box, the hd of 

 which is then fastened down securely and a charge of gas given by 

 means of the small box attached to the side of the large one. The 

 construction of the fumigation box is shown in (Plates 180 — 182. The 

 internal measurements are : — 



(?) Main Box, 8'6" long, 3'6" high, 3'3" broad = 96- 6875 c. ft. . 

 (ii) Generating Chamber. — I'S" long, 1*3" broad, 1*3" high= 1-9531 

 c. ft. 

 the internal capacity of the two boxes being therefore 986406 

 c. ft. 

 The construction will, I think, appear sufficiently plain from the 

 photographs. The planks are joined with a f" to secure gas-tightness 

 (see section of generating chamber, where part of side of main box is 

 shown). If any cracks appear, they can be closed with putty, caulked 

 or pasted over with stout paper. All that is required is a gas-tight box. 

 The lid fits on to a ledge on inner edge of the sides, a gas-tight joint 

 being secured by a strip of felt or other similar material secured onto 

 this ledge. The main and generating chambers are separated by a 

 sheet of perforated zinc to prevent any parcels under fumigation falling 

 into the generating chamber ; wooden or metal bars would do equally 

 well. The generating chamber is provided with a lead tray to catch 

 any acid that may be spilled ; its lid is bored with a small hole fitted 

 with a cork. 



For convenience of transport, the perforated zinc sheet, generating 

 chamber and lead tray are best removed and packed inside the main 

 box' which may be strengthened for transport by additional wooden 

 battens. 



