420 REPORT OF THE DEPARTMENT OF ENTOMOLOGY OF THE 
TABLE III.—- SEDIMENT IN COMMERCIAL PREPARATIONS. 










Beaumé | Sulphur SEDIMENT. | 
Teading in 
NAME OF BRAND. of solution = |————————>ApvY NN 
clear in one Free Sulphur | Calcium, {Sediment 
solution. barrel. sul- as magne- in one 
phur. sulphite. }| sium, etc.} barrel. 
Deg. Lbs. Per ct. Perechs erick: Lbs. 
rasselli tic oe eielelereie sys 32.4 139 —_— — — — 
BF PEER Oe Ne oe 32.0 131 — — —_ _ 
AUG eRe ee eens 31.8 131 — — — — 
Ni @PATR Ee, wae Sis tees fe eho 30.4 124 — — — == 
soll (HARA eto ferettaceea Tete 34.5 130 6.8 15.9 28.4 74 
th Uo: Sean ea Seed ae! 31.1 106 an) Oey 29.9 110 
vrei indict a hater ch te Cae ws be kame 31.4 119 0.9 16.0 29.0 45 
HROX HS Sales ee eee tere ol. 129 — — = 
RT SO ee Bo LO 138 pe — —— = 
UTR RYO Oee © Sas ES Sin? 129 — — — — 
THODISCH Mary lae eae 26.8 96 — — = == 
St) Mia ewere eLeee tee 33.9 139 — = — sic! 
These variations in the amount of soluble sulphur and sedi- 
ment largely explain the conflicting results obtained by fruit 
growers in their spraying operations for the scale. The an- 
alyses also emphasize the importance of uniformity of compo- 
sition, especially in its bearing on the question of the market 
value of the goods and in the matter of dilution to obtain prep- 
arations of constant strength. The more reliable compounders 
have realized the necessity of producing a uniform, high-grade 
product, and have established a standard strength for their 
preparations, which is guaranteed to the purchaser. This 
standardization of the various brands will presumably be gen- 
erally adopted, as there would apparently be but a small de- 
mand for mixtures that show considerable variation in their 
chemical or physical composition. 
THE INSECTICIDAL PROPERTIES OF THE SEDIMENT 
OF THE LIME-SULPHUR WASH. 
Considerable interest was created throughout the leading 
centers of fruit production by the claim that sediment is a de- 
sirable ingredient of a concentrated mixture. Mixtures con- 
taining insoluble sediment or sludge were recommended and 
were reported as being sold for a higher price than the clear 
