20 



ROACH BAIT. — The eommon roaches which int'est the hou- 

 ses frequently display considerable wariness towards poisons set 

 í'or their destruction, seemingly being able to detect no more 

 than a trace of arsenic. No remedy is known from which com- 

 plete relief may be gained, but one of the niost successful, accor- 

 ding to Circular 51 of the United States Department of Agricul- 

 ture, is a sweetened flour paste containing one or two pereent 

 of pliosphorus. The paste is spread upon bits of cardboard and 

 placed in the runways of the roaches. Care should be taken to 

 place the bait out of the reach of children. 



PYRETHRUM. — Pyrethrum is a valuable remedy for dust- 

 ing in ereaks where vermin oceur and is used in various ways as a 

 contact inseeíicide, but probably one of the most general uses 

 to which it may be put in Cuba is burning for a mosquito 

 smudge. The powder may be used dry and burned in a metal 

 receptacle <>r it may be made into cones in the following man- 

 ner: — Take 99 parts pyrethrum and 1 part potasium chlorate, 

 mix well and add water sufficient to make the mass stick toge- 

 ther. Mould into cones two and one half inches high and one 

 and one half inches in diameter at the base and set away to dry. 

 The drying may be quickened by placing the cones in a warm 

 oven. The potassium chlorate accelerates the burning and 5f a 

 larger percentage is used the cones burn more rapidly. 



NAPHTHALENE. — Naphthalene is a most excellent repe- 

 llant fór insects. It cannot be used in connection with food pro- 

 ducís, on aceount of the taint it gives them. It may be strewn 

 upon the shelvos in bookcases; enclosed with clothing packed 

 away and in various other places of a similar n ature where insects 

 frequent. 



ARTIFICIAL DISTRIBUTION OF BENEFICIAL FUNGÍ 



In Florida most excellent results are being experienced from 

 artificially distributiug beneficial fungi into the citrus groves 

 infested with the white fly, Alcyrodes citri. At the present time 

 the distribution is effected by three methods. 



