SCIENTIFIC NOTES
... (By Freeman Special Wire.) (From the Inventors' Mart.) A very useful discovery was recently made in California of a process for removing scale from steam boilers, and, like many other discoveries, was the result of accident. Mr. George Downie, the proprietor of a flouring mill at Salinas City, was in the habit of filtering water in an old heater in order to free it as far as possible from the ...