All this history would seem to stamp Mellor as only a dry, dusty chemist with relatively narrow interests, or at most as a purely academic creature. Nothing is further from the truth. He was instead a man of extraordinarily wide in page 12 However cramped his horizon may have been in his younger days, it became broadened and brightened to an extraordinary degree later on. His marriage undoubtedly had a lot to do with this. Mrs. Mellor was a perfect helpmate. Their home life was very happy, but more than that she provided the quiet, equable, well-ordered menage that kept Mellor clear of anxieties and freed him for his omnivorous reading and constant study. Although Mellor was in a position to multiply his income by doing outside consulting work, he had no financial ambitions and did not take advantage of any of these chances. This does not mean that he was not constantly engaged in doing such work, but he looked on his knowledge as something that should, as far as possible, be given as a gift to those desiring to benefit from it. He was free and unmethodical in money matters, and it was a happy chance that Mrs. Mellor —“The Boss” as her husband loved to call her—had the financial sense and method that he lacked. Further, Mellor was, particularly during his earlier years in England, radical in his political and social ideas and impatient of those social distinctions and observances that were then such a feature of English life. Mrs. Mellor had at once the tact necessary to cover her husband's neglects in this direction and yet the good sense to value social life at its true worth, and to keep it the servant and not the master of their destiny. Just as Miss Edgeworth gave one of her characters “just as much religion as was good for him,” so Mrs. Mellor gave the Doctor just as much polish and social “flair” as was good for him, but not an ounce more. The happy result was that Mellor was given the means to accumulate a fine library and the leisure to make full use of it. A proof of the first is the illustration on this page of that corner of his library that contained his card index, and this is reproduced to show also that if he lacked method in business matters he possessed it to the fullest degree in his studies. A further proof is the fact that, on his retirement, after disposing of 30,000 volumes (chiefly of pamphlets), he still had eight tons of books to transport to London. The fact that his life was also ordered to give him the leisure to use this great library is proved by the wealth of quotation that enriches his works and also by the fact that for over 20 years while he was writing his “magnum opus,” “A Comprehensive Treatise on Inorganic and Theoretical Chemistry,” it was his practice to prepare the work for two stenographers every evening from 8 p.m. till 2 a.m. the work being typed next day. The only temptation that interrupted the invariability of this procedure was the occasional family game of cards mentioned above.