New York AGRICULTURAL EXPERIMENT STATION. 3875 
used are diluted by adding 8 gallons of water to one gallon of 
concentrated mixture, while preparations 16-18 are applied 
without further dilution. Under these circumstances, it will 
be seen that the application of sulphide sulphur is considerably 
greater in the case of mixtures 16-18. This can be conveniently 
shown as follows: 
Amount of 
sulphide sulphur 
No. of preparation. Formula. in BO vaallons 
of mixture 
Sulphur. Lime. ready for application. 
Lbs. Lbs. Lbs. 
13-15 125 2 ieoD 
16-18 15 16 9.75 


These figures indicate that in applying mixture 16-18, about 
25 per ct. more sulphide sulphur is used than in case of 13-15. 
(4) It is also noticeable that the proportion of thiosulphate 
sulphur is much greater in preparations 16-18 than in 13-15, 
when the comparison is based on the mixtures properly diluted 
for application: Thus, in 50 gallons of mixtures 16-18, we 
have an average of 5.3 pounds of thiosulphate sulphur; while 
in, the diluted‘form, 50 gallons of preparations 13-15 contain 
about 1.8 pounds of thiosulphate sulphur, or about one-third 
the amount present in mixtures 16-18. 
EFFECT OF ADDING LIME TO DILUTED LIME-SULPHUR SOLUTION. 
The practice of diluting a concentrated lime-sulphur solution 
and adding lime just previous to making application to trees 
is common. The question has been raised as to what, if any, 
effect this might have upon the composition of the sulphur com- 
pounds in solution, especially the calcium polysulphides. For 
the purpose of studying this question concentrated lime-sul- 
phur solutions were diluted with water in the proportion of 8 
gallons of water to one gallon of concentrated solution, and to 
50 gallons of the diluted mixture there were added 10 pounds 
of commercial lime. 
