266 STATE HORTICULTURAL SOCIETY. 



it easy of manipulation in cold weather, and the large quantity of soap is 

 very cleansing and wholesome. Formula No. 2, however, will work well,, 

 especially as we shall wish to warm it at the time of each application. To 

 apply this, we use a common brush in case of cattle, horses, and hogs; and 

 in case of sheep, dip the animals right into the warm, diluted emulsion. 

 The cost of material for an average cow is about three cents, and the time 

 required for treatment, less than five minutes. For lambs and sheep, after 

 shearing, the cost of material is not to exceed two cents, and the time 

 required for the immersion need not be one minute to each animal. The 

 person dipping the sheep stands in the tank or vessel that holds the diluted 

 emulsion. We have tried this very thoroughly on cattle, hogs, and sheep. 

 The scrubbing of the cattle and hogs with the soft soap solution, by use of 

 a good brush, to quote from our herdsman, "kills the nits, makes the coat 

 glossy, and leaves the skin mellow and clean." No farmer in Michigan 

 can afford to neglect this excellent treatment. So cheap, so easy, it leaves- 

 no longer any excuse for vermin, infested barns and stock. 



KEROSENE EMULSION FOE THE ROSE CHAFER. 



Now that we know how to combat the codlin moth, Carpocapsa 

 pomonella, by use of the arsenites, there is no insect enemy so much to be 

 dreaded by the fruitgrowers as the rose chafer, also called rose beetle or 

 rose bug — Macrodactylus subspinosus Fab. There are three reasons for 

 this: Few destructive insects come in such overwhelming numbers, and 

 so come prepared to fairly devastate a region in a very brief period; few 

 are so promiscuous in their feeding habits, blighting nearly all our fruit 

 trees, and the grape; and very few seem so able to defy man's efforts to stay 

 their ravages. Heretofore no satisfactory remedy for this devastating evil 

 has been known. Jarring and trapping, as we fight the curculio, has been- 

 recommended, but has not given satisfaction in actual practice. Poisoning 

 with London purple or Paris green has utterly failed to stay the ravages of 

 this insect. Fruit men often say, "The rose chafer seems to grow fat on 

 the arsenites." Whether this is due to some strange power to resist this 

 usually fatal poison, or to the fact of the unlimited numbers of the insects,, 

 so that, as soon as one battalion is slain, another is in readiness to occupy 

 its place, it is difficult to say. It is quite possible that both reasons help< 

 to explain the enigma. 



This past season we have tried in a limited way both the kerosene emul- 

 sion and the pyrethro-kerosene emulsion, with very promising results. Of 

 course, a limited trial for one season is not conclusive, but where the 

 damage is so discouraging and terrible, any remedy promising relief should 

 be at once given to the public, that its virtue may be tested on a larger 

 scale in actual practice; especially if as in this case it is so easily and 

 cheaply done. 



Mr. Albert Jackson of Lowell, Mich., has in former years suffered great 

 losses from this rose beetle. This year one of us, Mr. G. C Davis, visited 

 Mr. Jackson's place. The beetles did not come in such enormous numbers- 

 as usual and had not yet attacked the peach foliage or fruit, but were thick 

 on a hedge row of wild roses. As the weather was quite cool the beetles 

 were not very active and it was easy to treat them. They were sprayed 

 with a one fifteenth hard soap emulsion (Formula No. 2). Some of the 

 beetles were immediately caught and inclosed in a well ventilated box.. 

 Nearly all were dead within two hours and all the next day. Others not. 



