Mosquito brigades and how to organise them / by Ronald Ross.

Date:
1902
Catalogue details

Licence: In copyright

Credit: Mosquito brigades and how to organise them / by Ronald Ross. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    So it is with the present project All we have to do is to keep a sufficient staff of men constantly employed upon the job. Before showing how this can be done, we must describe the breeding places in greater detail. 4. The Breeding Places of Culex,—In the gardens and backyards of most houses, especially the houses of natives in the tropics, there are generally numerous tubs, pots, gourds, old buckets, broken flower-pots, empty oil tins and meat tins, broken bottles, and such like. During rainy weather, most of these contain a little rain-water; and wherever this water exceeds a few ounces in quantity, and has been standing long enough, there we shall find the larvae of Culex. Tubs and cisterns employed for collecting rain-water from the roof, or for storing water for gardens, or even for keeping water for drinking, are favourite breed- ing places if they are left undisturbed long enough. Pots of water left by servants in the neighbourhood of cook- rooms and in back verandahs, and then forgotten, are very suitable. We can even find larvae in the tins of water placed under the feet of tables and meat safes for the purpose of excluding ants ; or in gutters which carry rain from the roof, and which have sagged, so as to contain a little stagnant water after the rain has passed ; or in un- corked empty bottles and sardine tins thrown on a dust- heap ; or in tin-lined packing cases ; or in the hollows of bamboos, drain pipes, or even cannon—in fact, wherever a little rain-water can collect. After the rains, Culex larvae generally exist in collections of water made for gardening or household purposes; cisterns; gutters running from stables, cookrooms, and