EXPERIMENT STATION BULLETINS. 409 



with the liome-made liine-siilphnr wasli : Rex Lime-8iilplinr solntion made 

 by the Ilex Company of Omaha, Nebraska. It is claimed, and analysis 

 shows it to be ymre lime snlj)hur solution in a concentrated form. It 

 is a clear reddish-amber liquid with a strong snlpluir odor, and resembles 

 the home-made mixture after the solid substance settles. It has been 

 used successfully for scale in some of the western states. When sprayed 

 on the trees it gives them a slight whitish tint. It mixe.l readily with 

 water and sprayed easily. In the early part of the season it seemed 

 effective, but toward the latter ]»art of the summer quite a few scale 

 Avere found, enough to show that it Avas not as effectual as the home- 

 made mixture. However, it is as good as any of the prepared mixtures 

 we have used. It can be brought for |12 i)er barrel of fifty gallons from 

 local dealers, and when mixed at tlie rate of one gallon of the IJex solu- 

 tion to eleven of water the ])rice of the mixture ready for spraying is 

 |l for fifty gallons of spray. As the mixture needs no heating and there 

 is little trouble in preparing it. tliis price is not excessive, and the 

 mixture would i)rove a valuable one for ])crsons with a few trees sliould 

 it j>]'Ove elfective Avhen tested under betier conditions. From the analysis 

 we would advise its use at the rate of one part to ten parts of water 

 and that five i)Ounds of lime be added to each fifty gallons to assist 

 in securing a good job of spraying. The Niagara Lime-i^ulphur solu- 

 tion is very similar. 



The Lion brand of Lime-Sulphur solution is said to be a concentrated 

 solution of lime and sulphur made by James A. Blanchard Co., New 

 York City, and contains insoluble matter resembling that found in the 

 home-made mixtures. It is used at the rate of one gallon of the mixture 

 to lorty of water. It was tested both at that strength and at the rate 

 of one ])art to twenty parts, but in neilher case did it do effective Avork. 

 Unless it is carefully t^trained, it clogs the nozzles. 



The Water Soluble Oil sent out by the Thomson Chemical Company of 

 Baltimore, INIaiylaud, was also tried. The results from its use were 

 similar to those from other soluble oils. The home-made lime-sulphur is 

 [)referable to any of the soluble oil preparations, or to any prepared 

 niixtiiT-es foi- the destruction of the scale, tliat we liave tested especially 

 wlien Uie cost is considered. 



The above i*esults, altliongli (]uite convincing to the experimenter, 

 rannol be taken as conclusive as the tests were not made under very 

 good conditions. 



During the summer, the second week in August, the limbs and some of 

 the leaves of a few trees each of apples, cherries, i)lums and pears were 

 sprayed with the full strength {l^t lbs. sulphur, 25 lbs. lime and 50 

 gals, water) and half strength of the home-made lime-sulphur mixture 

 and also several trees of each kind with the Kex lime-sulphur mixture 

 at the strengths of one to eleven and one (o twenty. This was <lone to test 

 the practicability of using either of these mixtures during the summer 

 on the main lind)s of (rees that were getting badly infested during 

 the season, as a check to the progress of the scale during the growing 

 season. Neither mixture, at either of the strengths used on any of 

 the trees, caused the slightest burning of the leaves. 



This is contrary to our experience of former years. Three years ago 

 various mixtures were tried and most of them burned the leaves. Our 



