262 The Philippine Journal of Science 



It has not been accurately determined whether latent or ter- 

 tiary cases of yaws constitute important sources in the infection 

 of susceptible individuals. Further observations are desirable 

 regarding the feasibility of substituting intramuscular for in- 

 travenous injection of neosalvarsan, especially when work is 

 conducted under the disadvantage of limited personnel. 



1. Annual Reports on Hospitals and Dispensaries, Windward Islands 



1912-13. Consulted in Trop. Dis. Bull. 3 (1914) 241. 



2. Bahr, P. H. Ann. Trop. Med. & Parasit. 8 (1915) 675. 



3. Bergen, L. G. Arch. f. Schiffs- u. Trop. Hyg. 19 (1915) 481. 



4. Brochard, V. Bull. Soc. Path. Exot. 6 (1913) 20. 



5. Castellani, A. Brit. Med. Journ. 2 (1916) 552. 



6. Kloppers, J. W. E. R. S. Geneeskundig Tijdschrift voor Nederlandsch- 



Indie 53 (1913) 18. 



7. Kurien, C. G. Report to the Colonial Office. Consulted in Trop. Dis. 



Bull. 10 (1917) 264. 



8. Maxwell, J. L. Journ. Trop. Med. & Hyg. 19 (1916) 237. 



9. McDonald, W. Report to the Colonial Office from the Governor of 



the Leeward Islands. Consulted in Trop. Dis. Bull. 5 (1915) 423. 

 10. Ricono, M. South African Med. Record 14 (1916) 83. 



