216 The Philippine Journal of Science 



sionally or regularly, wholly or in part, lose its morphologic, 

 though retaining its biologic, identity and may exist and act in 

 the form of a protoplasmic mass that, if it is not actually amor- 

 phous, is at least of such low morphological differentiation as 

 not to be demonstrable. This substance is referred to as a 

 "cryptoplasm." Other observations that have contributed to 

 the formulation of this hypothesis are to be reported. 



PROPHYLAXIS OF MALARIA 

 By Dr. Bernardo Samson 



Doctor Samson outlined his methods of treating malaria both 

 from the curative and the prophylactic viewpoints. He stated 

 that one of the principal difficulties in connection with the pro- 

 secution of antimalarial campaigns in the provinces lay in the 

 difficulty of establishing an understanding between the people 

 and the health officers. The distribution of pamphlets printed 

 in English, in Spanish, and in the vernacular he regarded as 

 of doubtful utility. Better work, he thought, could be done by 

 carefully arranged lectures, illustrated by lantern slides, given 

 by the Bureau of Health officials or local physicians. Instruc- 

 tion in hygiene in the public schools, he believed, should include 

 more information on mosquitoes and the symptoms and conse- 

 quences of malaria. Doctor Samson said he thought much good 

 would come by enlisting the cooperation of hacenderos employing 

 large numbers of laborers on their plantations. He advocated 

 the free distribution of quinine. — F. G. H. 



R. B. Gibson, 

 Editor of the Proceedings, 



Manila Medical Society. 



