. Rural sanitation in the tropics : being notes and observations in the Malay Archipelago, Panama and other lands. sts ofa long stem, from every few inches of which radiatingrays break out. When crushed in the hand, it has astrong garlic-like odour. He told me that he hadnever found larvae where this existed. Landing on the Gambon dyke, which keeps theChagres from flooding the Cut, we dropped into theCut and walked along it for about a mile. In thecentre of the Cut is a 20-feet wide drain, whichkeeps the bottom fairly dry, but in many placesthere are breeding-pools, all of which are oiled week
. Rural sanitation in the tropics : being notes and observations in the Malay Archipelago, Panama and other lands. sts ofa long stem, from every few inches of which radiatingrays break out. When crushed in the hand, it has astrong garlic-like odour. He told me that he hadnever found larvae where this existed. Landing on the Gambon dyke, which keeps theChagres from flooding the Cut, we dropped into theCut and walked along it for about a mile. In thecentre of the Cut is a 20-feet wide drain, whichkeeps the bottom fairly dry, but in many placesthere are breeding-pools, all of which are oiled facilitate this, oil-pipes have been carried to thebottom of the Cut at certain places. In places thebottom of the Canal is like a mosaic of stones looselyset, between which are little pools of water. Theseare prolific breeding-places for Anopheles, and notthe least important part of the inspectors work issupervision of these countless isolated small the sides of the Cut, innumerable small springsexude, each of which must also be oiled. When weconsider that this Cut is 9 miles long, that at the. Fig. 25.—The Chagkes found among the driftwood in the eddy at the place where Mr Bath isseen .n the photograph. Along the rest of the river bank no larvae couldbe found. Faix page 152. BAS OBISPO 153 south end the sides are terraced to a height of400 feet, and are constantly being- altered in theexcavations, some idea will be gained of the magni-tude of the sanitary work done. The Cut is a specialdanger; for a series of stations containing thousandsof people have been built on its banks, well withinthe range of mosquitoes breeding in it. Climbingout of the Cut at Haut Obispo, we walked to BasObispo, past Camp Elliot, and had tiffin at the Bas Obispo runs the Rio Mandingo, which,with its tributary the Camacho (both more or lessartificial now), drains the land on the west of theCanal into the Gatun Lake; it is a stream about20 feet wide. At t
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