At the end of this time the gas is drawn out again, and then a current 

 of air is circulated to remove the last traces of the gas as far as possible 

 before the seed is taken out and sacked. 



The machine has been tested by Mr. Aladjem, the Ministry's 

 Assistant Chemist. He states that in the first trials carried out 

 during August, when the temperature was high, the results were 

 entirely satisfactory, but that when the weather became cooler it was 

 found to be necessary, as was anticipated by Mr. Mosseri, (1) to dry 

 the gas, and (2) to keep the temperature of the seed and apparatus 

 above 27 in order to prevent the condensation of the gas. For the 

 latter purpose, owing to the lack of facilities for having an elaborate 

 piece of apparatus made, the seed was either spread out in the sun or 

 heated by means of a somewhat primitive hot-air machine improvised 

 from the materials available. In this way it was found that when 

 the temperature of the seed was about 30 C. the mortality of the 

 worms was generally about 93 per cent. 



It appears from this that the question of condensation makes it 

 essential that machines of this type should be provided with some 

 apparatus for keeping the temperature of the whole plant at least as 

 high as 27 C. 



Fumigation with hydrocyanic acid gas has no effect on the 

 germination of the seed. 



The machine has been approved by the Ministry of Agriculture, 

 subject to certain conditions imposed by the Department of Public 

 Health. 



For further particulars apply to Mr. Victor Mosseri. Ingenieur 

 Agronome, Cairo, or to the Ministry of Agriculture. 



(3) American Cyanide Fumi gator. During 1914 a proposal was 

 made by Mr. Dudgeon, Consulting Agriculturist to the Ministry of 

 Agriculture, to employ a machine of the type used by the American 

 Government for fumigating imported bales of cotton. In principle 

 the machine is exactly the same as the last, but the seed, instead of 

 being fed into cylinders in bulk and sacked after treatment, is first 

 sacked and then run on trucks into a horizontal cylinder. A machine 

 of this type was actually ordered, but, owing to the difficulty of getting 

 the work executed during the war. the order afterwards had to be 

 cancelled. The machine has apparently proved quite successful in 

 fumigating steam-pressed bales of cotton, but whether it would 



