DISCUSSION. 347 



nets to the protected side, and I observed that when such an arrangement 

 was made few men suffered from the insects. Of course, it is very 

 objectionable for people to sleep together, for many reasons, but in 

 cases like this it seems advisable. 



Major Hoolon, I. M. S.. Rajkot, Kathiawar, India, delegate, from the 

 government of India. — I have listened with great interest to Doctor 

 Dunbar's paper and think that, especially at the present time, when it 

 appears to be the opinion of some authorities that prophylaxis by 

 mosquito destruction, on the lines recommended by Eoss, is for the most 

 part impracticable on the score of expense and for other reasons, it is 

 most important that instances in which it has been successful should be 

 put on record. Personally, my own experience entirely corresponds with 

 that of the previous speakers. I have lived in several Indian stations 

 where a notable decrease of mosquitoes has followed the usual measures 

 of destruction, and have recorded, in one instance, an almost total 

 disappearance of malaria and I think it is obvious that under the 

 conditions prevailing in many Indian towns and villages action on these 

 lines, properly carried out, must meet with success. There are, of course, 

 certain localities where quinine is the only possible means of prophylaxis, 

 but I would urge that these are exceptional and that quinine should be 

 regarded on the whole as of secondary importance to the destruction of 

 • mosquitoes. Another point is that the abolition of collections of waste 

 water goes hand in hand with general sanitary measures. 



I think it would be an excellent thing if the opinion of this meeting 

 could be taken as to the general practicability or otherwise of Professor 

 Boss' measures. 



Doctor Atkinson. — Our experience in Hongkong, during the past ten 

 years, have proved entirely confirmatory of the beneficial results arising 

 from applying Professor Boss's method of mosquito destruction in a 

 malarial district. I have instanced the case of MacDonald Boad in 

 Hongkong. Malaria was very prevalent there in 1900 and 1901. In the 

 winter of 1901 and 1902, active antimalarial measures were carried out, 

 viz, removal of brushwood and undergrowth around the house, training 

 of the nullahs and drainage of all collections of standing water. In 

 addition, an active fumigation with sulphur of the coolie quarters attached 

 to the houses was carried on. The result is that now in the district 

 where previously malarial fever was very prevalent, no cases occur. 



Doctor Brooke. — While most of us seem agreed on the admirable 

 results which can be obtained by mosquito destruction, quinine prophy- 

 laxis, and general sanitary measures, no speaker has yet mentioned the 

 valuable aid to antimalarial campaigns which can be rendered by legal 

 enactments. 



Ordinances have recently been passed in the British East Indies making 

 it a legal offense on the part of a householder or occupier to have any living 



