540 ADDENDUM 
should be kept well stirred, especially during the early stages of the 
process. The boiling should continue until the sulfur granules are evi- 
dently dissolved, generally 40 to 60 minutes. Pour or strain the clear 
liquid into a barrel or other storage vessel that can be completely filled 
or corked, and cut off air contact with a thin layer of paraffin oil, or 
any other heavy oil, to prevent formation of crystals. 
To test the concentration of the commercial and the home-made solu- 
tions, secure a Beaumé hydrometer at the drug store, with a range of 
25 to 35 degrees. In testing the solution, pour some of the clear red- 
dish liquid into any deep receptacle, deeper than the hydrometer is 
long, and when full gently drop the instrument into the solution and 
wait until it comes to rest. Then read on the hydrometer the degree 
of concentration, which will be the one just at the surface of the liquid. 
When the degree of concentration of the solution is known, the proper 
dilution may be obtained by referring to the following figures : 
Concentrate Dilution for San Dilution for Dilution for Dilution for Pear 
Testing (degrees José Scale and Peach Leaf Curl Apple (Summer and Cherry 
Baumé) Blister Mite (Trees Dormant) Spray) (Summer Spray) 
BOLau oe 1 to 83 1 to 163 1 to 434 1 to 56 
Oe Bins 1 to 8} 1 to 16 1 to 424 1 to 54 
Boz eens 1to8 1 to 153 1 to 41 1 to 52 
Boerne 1 to 73 1 to 15 1 to 40 1 to 50 
BP ance 1 to 72 1 to 143 1 to 39 1 to 48 
BO scceo3 1 to 64 1 to 14 1 to 3873 1 to 46 
20a ae 1 to 63 1 to 133 1 to 36 1 to 44 
DB one 1 to 6 1 to 13 1 to 35 1 to 42 
7 1 to 53 1 to 123 1 to 334 1 to 403 
26-2562 1 to 5} 1 to 12 1 to 323 1 to 384 
Os ene 1 to 5 1 to 11 1 to 31 1 to 37 
Arsenate of lead may be added to the diluted concentrate at the rate 
of from 2 to 3 pounds to 50 gallons. Paris green, arsenite of lime, or 
arsenite of soda, should not be used with lime-sulfur. 
The usual or average strength of these concentrated lime-sulfurs is 
about 32°; for dormant ‘trees, a 1-9 dilution is usual, and for trees 
