Show AGAINST INSECT PESTS IN CANAL CAMAL WORK Elimination of Yellow F Fever Made Canal Completion r Possible Since Sinco Undo Uncle Unc Sam started to dig alg th the Panama canal everyone has known that hat one of ot the tho most Important problems 1 to solve was how to keep tho the workers worker alive alvo and well wel until tho work was fin fin- Sanitary work in Panama has hIs alwn always s 's been considered very cry important Important rom From tho first tint discovery ry ot of America Amerle this point had been th the place ploce of at crossing cross croaa- crone j jIng Ing between the tho two oceans oceans in the the western hemisphere and therefore there thero has always been at Panama Panama a largo number of or Euro Euro- These EUropeans Europeans Europeans Euro EUro- were food tood for tor tropical infectious i diseases particularly yellow fever feyer For this reason says sas Colonel Gorgas Goras in a recent issue of The Journal of at ticS the v Medical Association Panama V has acquired the tho reputation of or being t tho the most mOt unhealthy spot known When the United States commenced the tie building of or tho tIne canal in 1304 1904 this fact had been sharply accentuated by the recent experience of our Immediate j predecessors tho the French Tho The French a company kept a large largo force on the tho 7 isthmus for tor eight years ears Their losses from tropical diseases particularly v Y yellow lOW fever startled started tho the world But between tho time of ot the failure of or the French company in 1889 and the un un- un- un of tho the work by tho the America Amen Ameri Amer- Amer ca cans n two great discoveries had beon been made in the field of or tropical medicine which revolutionized sanitation in the tropics The Tue first was the discovery In 1898 by Ronald Roes Roys ROis and ad other that malaria is conveyed con by tho the bite of or the female of a a. a particular genus of Tho other wa was wal the tho proof by Walter aler Reed and his hlA confreres that yel yel- i low fever favor is conveyed from man to toman toman toman man b by the bite blo of the female of another another another an- an other species of or mosquito Walter Waler Reed was a surgeon In the United States Slates army and announced the tho achievement of or his board in the thc year 1901 Tho discovery that yellow fever was vas conveyed by a mosquito was of ot even moro more importance to tropical America I than the discovery that malaria W was S conveyed in this way At the time 1 that Reed announced the discovery the United States had control of ot Havana Methods were worked out whereby by 3 Reeds Reed's and Ross's Rosa's discoveries could b be b made of practical u utility ti ty Unexpected success was accomplished as to both 1 yellow fever and malaria malaria Within a a. year yellow fever had disappeared d from Havana Havana For a a. a hundred and fifty years pears before betor that that- thi Thi Mt I v ti ri 4 I tX l never been fre free tr from i ii i yellow i fever Malaria Malaria disappeared moro morn slowly But now after ten ton years ears of or mosquito i work tho the deaths death from malaria in the d city of at Havana Havano have havo dropped from an anI I average of ot per year to an average of about ten Tho The success In Havana having been baen so marked markel the tho United wr itu States determined deter detor- i mined to apply the same principles at Panama Work Woric was commenced at In A May 1904 in May 1906 the tho last ease case A mus of 01 yellow fever occurred on the HI |