This change in principle immediately overcame the great objection 

 to the true hot-air macliinrs. namely, their immense size compared 

 with their output. The results of the experiments proved quite 

 satisfactory, particularly so considering that the machine in question 

 was only erected as an experimental model ;MH| wns not fitted either 

 with a satisfactory feed or with adequate means for regulating the 

 steam pressure. 



In spite of demonstrations, however, it became increasingly 

 obvious that nothing would ho done by the ginners until it was nunlr 

 compulsory by law to treat all the seed in the country against pink 

 boll worm. There were many difficulties in the way of such a law. 

 particularly during war time, and inquiries connected with them 

 occupied a considerable amount of time. However, the law (No. 29 

 of 1916) was eventually promulgated on December 15, 1916, to the 

 effect that during the coming ginning season, i.e. 1917 to 1918, all 

 cotton seed must be treated ;i gainst pink boll worm with a machine 

 approved by the Ministry of Agriculture. At the same time an 

 effort was made to rediice the danger from worms in the seed to a 

 minimum during the current season by prohibiting the storage of 

 cotton seed and unginned cotton in the country after May 1. except 

 in licensed moth-proof stores. Later it was found to be impossible 

 to obtain a sufficient number of machines for the whole of Egypt for 

 the 1917-1918 ginning season. Consequently it has been decided not 

 to enforce the law during the coming year. 



The promulgation of the law, however, had an immediate effect 

 on the activities of the ginners and local manufacturers such as all 

 the previous demonstrations and recommendations had failed to 

 produce, and during the four months following its publication the 

 Ministry of Agriculture received more than twice as many suggestions 

 for machines for treating cotton seed as had been received in the 

 previous four years. Some of these were merely adaptations of 

 others, some have not proved successful, and others have not yet 

 been tested. All, however, are briefly described below, in the hope 

 that the descriptions will prove of interest and value to any one 

 contemplating the erection of machinery for the treatment of cotton 

 seed. 



