146 PAESONS ON THE KOSE. 



roses from their attacks has become very desirable to all 

 persons who set any value on this beautiful ornament of 

 our gardens and shrubberies. Showering or syringing 

 the bushes with a liquor, made by mixing with water the 

 juice expressed from tobacco by tobacconists, has been 

 recommended ; but some caution is necessary in making 

 this mixture of a proper strength, for if too strong, it is 

 injurious to plants ; and the experiment does not seem, as 

 yet, to have been conducted with sufficient care to insure 

 safety and success. Dusting lime over the plants when 

 wet with dew has been tried, and found of some use ; but 

 this and all other remedies will probably yield in efficacy 

 to Mr. Haggerston's mixture of whale-oil soap and water, 

 in the proportion of two pounds of the soap to fifteen 

 gallons of water. Particular directions, drawn up by 

 Mr. Haggerston himself, for the preparation and use of 

 this simple and cheap application, may be found in the 

 " Boston Courier " for the 25th of June, 1841, and also 

 in most of our agricultural and horticultural journals of 

 the same time. The utility of this mixture has already 

 been repeatedly mentioned in this treatise, and it may be 

 applied in other cases with advantage. Mr. Haggerston 

 finds that it effectually destroys many kinds of insects ; 

 and he particularly mentions plant-lice of various kinds, 

 red spiders, canker-worms, and a little jumping insect 

 which has lately been found quite as hurtful to rose-bush- 

 es as the slugs or young of the saw-fly." 



Rose-Bu^. — Macrodactylus subspinosa. — " Common as 

 this insect is in the vicinity of Boston, it is, or was a few 

 years ago, unknown in the northern and western parts of 

 Massachusetts, in New Hampshire, and in Maine. It 

 may, therefore, be well to give a brief description of it. 

 This beetle measures seven-twentieths of an inch in length. 

 Its body is slender, tapers before and behind, and is en- 

 tirely covered with very short and close ashen-yellow 

 down ; the thorax is long and narrow, angularly widened 



