There are many situations, such as houses necessarily placed in the midst of canal irrigation--Government canal bungalows for example--in which no other method of protection is in any way practicable, and it is clearly the duty of Government to protect officers, such as irrigation and forest officials, whose duties lead them into specially dangerous places, in this way in all cases where official quarters are provided. There cannot be the least doubt, too, that the capital so spent would be found to be a highly remunerative investment, and that this would be equally the case if steps were taken to protect all barracks in this way instead of wasting the costly soldier by needless invaliding. In the case however, of civil and military officers, who have to rent their houses from landlords, who are generally needy natives, with neither inclination, nor means, to provide costly improvements, the utmost they can do is to provide themselves with a sufficiency of portable folding gauze screens to protect their sleeping chambers. In any given locality there is generally some approach to a standard size for doors and windows, so that by the exercise of a little ingenuity it ought to be possible to adapt a set of folding screens to any room, allowing them when too large to overlap the sides of the embrasure, and supplementing deficiencies with sacking or rough planking. In India, for example, door openings are usually about 7 ft. by 4 ft., and screens opening out to this size might be utilised in most houses. It is obvious that the set of frames provided for each room must include one filled with a small spring door. I believe that a number of screens capable of opening out to something larger than the dimensions of an average doorway would be less bulky than any possible portable mosquito-proof room--and at any rate a complete set for an ordinary family would weigh far less than an average piano, and would be far more conducive to health. It should be added that in this, and in all cases where single rooms are placed under protection, all doors, internal as well as external, must be protected, and as they would in no way prevent the use of a punkah, they would be an enormous improvement on the ordinary mosquito net, which, failing such appliances, is an absolute essential to health during the malarious season.