. The Entomologist's record and journal of variation. iltshire is to be congratulated on his handling of thesubject, in doing which he has drawn on all known reliable sources ofinformation, as also are Sayyid Rushdi ai Chalabi, Minister of Agricul-ture, Sayyid Dhia Jafar, Minister of Development, and Sayyid Darwishal Haidari, chief of the Fourth Technical Section, Ministry of Develop-ment, whose energy and foresight have made this Avork possible. S. N. A. J. I Night without nets Among a thousand small and secret sounds of the tropic nightthere is one which, since time immemorial, has meant dis
. The Entomologist's record and journal of variation. iltshire is to be congratulated on his handling of thesubject, in doing which he has drawn on all known reliable sources ofinformation, as also are Sayyid Rushdi ai Chalabi, Minister of Agricul-ture, Sayyid Dhia Jafar, Minister of Development, and Sayyid Darwishal Haidari, chief of the Fourth Technical Section, Ministry of Develop-ment, whose energy and foresight have made this Avork possible. S. N. A. J. I Night without nets Among a thousand small and secret sounds of the tropic nightthere is one which, since time immemorial, has meant disease andmisery and death to men in many lands. Unseen in the darkness,riding on diaphanous wings, mosquitoes brought malaria to fiftymillion, it is estimated, in Asia alone every year—beforecontrol was instituted. And of these, half a milUon died as a directresult. Today, the picture is changing. Gradually, the night isbeing made safe for man—without nets. Slowly but surely. Bydegrees—and by insecticides like dieldrin, developed by In the Philippines, dieldrin—used as a residual spray—is playinga major part in a nation-wide house spraying campaign to eradicatemalaria-carrying mosquitoes (chiefly Anopheles minimus flavi-rostris) completely from the islands. Already, results are greatlyencouraging. Sickness is falling sharply, in some cases by 75%.Infants are growing up free of the malaria menace. And what canbe achieved in the Philippines can be repeated elsewhere. dieldri dieldrin, endrin, aldrin, D-D and Nemagon are tSHELLj pesticides for world-wide use WW For further information apply to your Shell Company. Issued by The Shell Petroleum Company Limited^ London., , England EXCHANGES AND WANTS Wanted.—The following uionthly parts of Tlie Entoiuoiogixt s Record :—Vol. 2iiNo. 12 (December 1914) and Vol. il. No. 3 (March 1929).—A. D. Riley. 7 MvKminoad, Wimbledon, London, Wayited:—An early run of The KnlomOlogist, preferably Vols.
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