Mr. Walker was an observant man, who has since that time installed a number of waterworks systems and obtained several patents of his own. He describes the boy of sixteen as engrossed intensely in his experiments and scientific reading, and somewhat indifferent, for this reason, to his duties as operator. This office was not particularly busy, taking from $50 to $75 a month, but even the messages taken in would remain unsent on the hook while Edison was in the cellar below trying to solve some chemical problem. The manager would see him studying sometimes an article in such a paper as the Scientific American, and then disappearing to buy a few sundries for experiments. Returning from the drug store with his chemicals, he would not be seen again until required by his duties, or until he had found out for himself, if possible, in this offhand manner, whether what he had read was correct or not. When he had completed his experiment all interest in it was lost, and the jars and wires would be left to any fate that might befall them. In like manner Edison would make free use of the watchmaker's tools that lay on the little table in the front window, and would take the wire pliers there without much thought as to their value as distinguished from a lineman's tools. The one idea was to do quickly what he wanted to do; and the same swift, almost headlong trial of anything that comes to hand, while the fervor of a new experiment is felt, has been noted at all stages of the inventor's career. One is reminded of Palissy's recklessness, when in his efforts to make the enamel melt on his pottery he used the very furniture of his home for firewood.