2432 A. A. RAMSAY. 
THE COMPOSITION oF soME LIMEH-SULPHUR SPRAYS 
MADE ACCORDING TO RECOGNISED FORMULA. 
By A. A. RAMSAY. 
(Communicated by F. B. GuTHRIE, F.1.C., F.C.S.) 
[Read before the Royal Society of N.S. Wales, August 5, 1914. | 
THE use of lime-sulphur sprays as a fungicide and insecti- 
cide in the orchard is now very general and is steadily 
increasing. The term lime-sulphur has been applied to the 
product of boiling together lime and sulphur with water. 
These sprays are usually made on the orchard as they are 
required, and for their manufacture many and varied 
formule have been suggested both here and in America, 
satisfaction and efficiency having been claimed for each, 
persumably after actual trial in the field. 
It was thought advisable, owing to the absence of specific 
information, to manufacture a quantity of the spray-fluid 
according to certain formule on a small scale in the labor- 
atory, and to have these examined and analysed to ascertain 
what results were actually obtained by following the various 
methods suggested. This has been done, and the results 
of the investigation are here given. The mixtures ex- 
amined have been prepared according to:— 
Wagga Orchard Formula (a)—using 4$ tbs. lime, 6 Ibs. 
sulphur, 50 gallons of water. 
Farmers’ and Fruit Growers’ Guide Formula (b)—using 
18°91 ibs. lime, 16°66 tbs. sulphur, 50 gals. water. 
Illinois Formula (c)—using 15 Ibs. lime, 15 Ibs. sulphur, 
50 gallons of water. 
Dural Demonstration Orchard Formula (d)—using 40 Ib. 
lime, 80 fb. sulphur, 50 gallons of water. 
(a) As used at Wagga Farm Orchard, N.S.W. (6) Farmer’s and Fruit 
Growers’ Guide, 5th Edit., Government Printer N.S.W., 1904, page 378. 
(c) Agr. Gazette, N.S.W., xx1, page 643. (d) As used at Dural Demon- 
stration Farm, N.S.W. 
