Mosquito Remedies and Enemies 125 



but I cannot find the notes on this point. Salting the 

 gutters would kill much of the food of the larvae — 

 thus, to some degree, reducing them by starvation. 

 Lime in large quantities keeps the nuisances out 

 of buckets, pools, etc., and is to be recommended 

 for barnyards and muddy pools, as the results last 

 for a long time. Much must be used, and it is 

 ineffective when there is much addition of water. 

 Chloride of lime, as ordinarily applied for disinfect- 

 ing purposes, is a good larvicide for gutters and 

 drains. 



As for permanganate of potash, it is of no use 

 whatsoever. 



Repellents for Adults. — Dr. Smith says that for 

 years he used a repellent consisting of a mixture of 

 oil of tar, oil of pennyroyal, and olive oil. It is not to 

 be wondered at that any respectable mosquito would 

 flee from such a concoction. He also states that oil 

 of citronella, which has an odour not unpleasant to 

 most people, is thoroughly protective, and, when 

 there is little perspiration, lasts for an hour or more. 

 It stings if it gets into the eyes. 



Fish oil, with a little crude carbolic acid, will keep 

 the mosquitoes from horses and cattle. As Dr. 

 Smith remarks, the actual monetary loss resulting 

 to dairymen from the lessened flow of milk, conse- 

 quent to continual fighting of mosquitoes, would 

 go far toward eradicating the dangerous breeding 

 areas. 



The following mixture is, I believe, the best : Cedar 

 oil, one ounce; oil of citronella, two ounces; spirits 

 camphor, two ounces. A few drops of this on a 



