EDUCATIONAL PROPAGANDISM 59 



attention was drawn to them, for the authorities have 

 adopted the plan of cleaning the trees of these epiphytes, 

 One Saman tree which was cleaned up for this reason 

 yielded twenty-six cartloads of epipliytes. The total 

 weight of these was 3-62 tons. As each plant may 

 hold from ten to twenty ounces of water, tlie total 

 volume of water represented by 3-62 tons of plants 

 must be very great indeed ; the water in this Saman 

 tree was probably equivalent to a good-sized pond, 

 capable of fostering a very large number of larva?. 



Educational propagandisvi. — As part of any anti- 

 mosquito campaign, the education of public opinion 

 must take a very prominent share. In my experience 

 in the tropics, I can state that the public is being 

 educated to appreciate the danger of mosquitos and 

 other insect pests, and therefore to organise to get rid 

 of them. This state of feeling has been produced by 

 the increased number of public lectures given by medical 

 men and teachers, and by the distribution of pamphlets, 

 and by the press in many cases giving increased promi- 

 nence to all work on mosquito destruction. Primers 

 on hygiene including antimosquito measures are used 

 in the schools. Pupil teachers, police officers, and those 

 who wish to qualify for sanitary inspectorships are now 

 being trained in mosquito destruction. Further, by 

 means of small handbills and posters, the poorer 

 classes are being trained to fully appreciate the danger 

 of harbouring mosquito lar\ as. 



But, as is well known, education is very well in 

 its way, but unless it is occasionally backed up by the 

 strong arm of the law, little progress would, in the long 



