THE METHOD BRIEFLY DESCRIBED 



357 



cords; for, in order to insure the lowering of all packages, we tie 

 a second cord so that it will not slip, securely to the first one. 

 About eight feet from the first screw-eye, toward the window, pass 

 it through the screw-eye, and attach a heavy weight to same. If 

 the jars have been placed in position and it is well that they 

 should be before the next step, since this enables the workmen 

 to locate at a glance the whereabouts of the perpendicular strings 



Fia. 362. The proper way to hang a bag 

 above a jar. 



FIG. 363. The wrong way to hang a bag 

 above a jar. 



they must be absolutely empty, the preparation of the acid and 

 water being left until later. 



Reliable men should next be sent through the building with the 

 packages of cyanide. They should tie one package most securely 

 to each perpendicular string. The package should hang by its 

 neck a good ten inches above the top of the jar (Figs. 362 and 363), 

 and the men should bear in mind that the string will stretch, and 

 act accordingly. The charges of cyanide being all tied, the next 

 step is to place the water and acid in proper proportions in the 

 jars. Each jar must first be moved away at least three feet from 

 under its charge of cyanide. The necessity for this is evident. 



