98 



FiSKE (W. F.). Report of Entomologist. — Uganda Protectorate: 

 Ann. Med. & Sanit. Rept. 1920, Entebbe, 1921, pp. 49-63. 

 [Received 26th February 1922.] 



Attention was devoted throughout the year to the Victoria Nyanza 

 Sleeping Sickness area. The work and experiments undertaken may 

 be included under the following headings : thorough general inspection 

 of the proscribed zone to ascertain the actual conditions at present, 

 and the extent to which the Sleeping Sickness Rules are irregularly 

 relaxed ; the regularisation, by amendment of rules, of existing 

 relaxations wherever they are of long standing and no harm can be 

 shown to have resulted ; the granting of extensive privileges in all 

 parts of the infected area in accordance with rules as thus amended ; 

 the enforcement of the amended rules strictly ; the extermination 

 of tsetse-fly [Glossina palpalis) through clearing of foreshore ; the 

 utihsation of fuel from clearings ; the maintenance of clearings by clean 

 culture and by close grazing ; and the revival of the fishing industry 

 under sanitary conditions. 



The activities reported herein, which should be read in the original 

 as they are unsuitable for an abstract, are the result of conclusions 

 reached through two-and-a-half years' research ; they are regarded 

 by the author as an experiment in the reclamation of territory infested 

 by the tsetse-fly and are designed to serve as a guide and precedent 

 for future operations. 



Glossina palpalis is not, as previously assumed, a natural parasite 

 of man, but its preferred hosts are reptiles. Tsetse-flies do not increase 

 and spread with the increase and extension of population, but only 

 with the decrease and restriction of population. Sanitation of the 

 lake area against sleeping sickness can have no other object than 

 to permit its repopulation and the economic development of its 

 natural resources. These operations should be conducted in such a 

 way as to bring about the maximum destruction of the fly with a 

 minimum exposure of the population to the fly during the process. 

 It requires full knowledge of the bionomics of the insect in order to 

 direct and supervise the reclamation and repopulation of the closed 

 area in this manner. A successful outcome would be assured but 

 for one circumstance, and that is the present absence of sleeping 

 sickness in the area, and the consequent unwillingness of the population 

 to undertake the necessary precautionary measures. 



Sergent (Et. & Ed.). Etude experimentale du Paludisme des Oiseaux. 

 Un meme Lot de Moustiques peut infeeter successivement 3 Sujets. 



—C. R. Soc. Biol, Paris, Ixxxvi, no. 1, 18th February 1922, 

 pp. 349-350. 



Experiments are described in which an individual of Culex pipiens 

 fed only once on a bird infected with Plasmodium relictum was able to 

 transmit it to three uninfected birds in succession. 



Metalnikow (S.). Les Changements des Elements du Sang de la 

 Chenille {Galleria mellonella) pendant I'Immunisation. — C. R. Soc. 

 Biol., Paris, Ixxxvi, no. 7, 18th February 1922, pp. 350-352. 



The changes occurring in the blood of the larvae of Galleria mellonella 

 during immunisation are discussed. The injection of micro-organisms 

 produces a strong reaction of all the free cells of the blood. The 

 phagocytes decrease within one to two hours after injection, whereas 



