[Illustration: FIG. 11.--Railway servant’s cottage in the Roman Campagna, protected against the entry of mosquitoes by Professor Celli’s method.] The main obstacle to the adoption of the plan is undoubtedly the expense, which would amount to £20 or £30 for an ordinary Indian bungalow, and though this may appear by no means prohibitory in the case of permanent residents, it puts the matter practically out of the reach of even well-paid officials, as they can never count on enjoying the benefits of any permanent improvement of this sort for more than a few months; the wisdom of our rulers almost always leading them to transfer an officer to another station long before he is likely to have thoroughly learned his way about the streets of the town he has to govern. [Illustration: FIG. 12.--Ground-plan of an existing up-country Indian Bungalow, to show method of adapting one (Professor Celli’s plan) of wire gauze protection. The dotted lines represent the wire gauze screens. _D.G.D._, double spring doors of wire gauze; _S.G.D._ single spring door of wire gauze combined with existing ordinary door; _B.R._, bath-room; _D.R._ dressing-room. Scale, 18′ = 1″.] On the preceding page is given the ground plan of an actually existing “up-country” bungalow of a very usual type in which the spaces guarded by gauze are indicated with dotted lines. The original doors are shown as complete, and the windows as shaded gaps. As will be seen, the number of doors for actual traffic is reduced to three, not counting those of the bath-rooms, which, being but little used during the hours of mosquito activity, have been left with single spring doors only.