Arm HO. \ REIJCS 89 



In a window case arc shown Narious staj:;('s of tlic coiniiion inosfjuito, 



( 'iilcx, as well as ot" Anopheles, the cari'iei- of niahiria, and 



Mosquitoes A(m1(>s. which is responsible for t he spread of yellow fever. 



and Other , , , r 4 1 • ^ • i 



Inthe same case are specunens ol olhei- insect carriers, such 

 Insect Carriers 

 of Disease '^"^ ^''^' ^^^"^" ^"^' l)cdl)U<2; and the louse, ^inall cases flankinj^ 



the windows contain specimens of the (llossinas which 

 transmit sleepinj2;-sickness and the Nagana disease in Africa, and of the 

 ticks which s})read Texas fever of cattle and relapsing;' fever, African 

 fever, and Rocky Mountain spotted fever of man. Nearby are shown 

 ma])s indicating the area affected by the principal tick fever in the United 

 States and a model of a dipping vat used in freeing animals from tick 

 infestation. 



A series of models and diagrams is devoted to the life history of the 



Anopheles mosquito and its relation to malaria. A relief 

 osqui oes ^^^ ^^ ^^^^ State of Arkansas illustrates the coincidence 

 and Malaria c i • 



between low swampy lands and the prevalence of malaria, 



and another shows the heavy incidence of malaria in the vicinity of 

 marshlands near Boston. A small relief map indicates the type and 

 arrangement of drains used for lowering the water level and eliminating 

 mosquito-breeding pools, and diagrams illustrate the progress made in 

 mosquito control in New Jersey and the financial return which has 

 resulted. 



A wall case devoted to the natural history of the mosquito illustrates 



the world distribution and seasonal prevalence of malaria 

 Y ,, p and yellow fever in relation to the habits of their mosquito 



hosts, the breeding-places of mosquitoes, the life history 

 (shown by specimens) and the money cost of malaria to the United 

 States. Here are also sho^^TL some of the practical methods of control 

 by ditching, oiling, stocking with fish, and encouraging enemies such as 

 the bat, bite cures, and repellents and finally the practical results in 

 the reduction of malaria which have been obtained in Italy. 

 A second mosquito case contains a series of small-scale models, 



attractively worked out by Otto Block, illustrating 



on ro o some of the methods and results of tropical sanitation 



Mosquito- . . 



borne Disease ^^ apphed to the mosquito-borne diseases, malaria and 



yellow fever. A hospital at Panama is sho^\Ti as it was 



during the French regime wdth mosquito-breeding pools all about and 



Tvnth the legs of the beds and the flower pots set in dishes of water 



to keep off the ants. In contrast there is illustrated a modern hospital 



with all stagnant water removed, and wards screened and ventilated. 



Other models show the sanitary squads on the Isthmus which fought 



the yellow-fever mosquito in the to^^Tl by fumigation, and the malarial 



