This would have been decidedly unfair to the authors for the reviewer has misrepresented their book. It seems to me that it would be better to leave a book review unwritten until a really careful and scientific examination of the book is made. It is particularly unfair when "the book cannot be recommended as a whole for a serious course." I have no personal interest in the bwk, the authors, or the reviewer, but would like to put in my plea for book reviews which are fair and just. 2. T. WALTER BRAWLBY UNIONHIGHSCHOOL AND JUNIOR COLLEGE, BRAWLBY, CALIPORNIA
THE WOHLER PLAQUE^,^ I am writing to inform you of an interesting bit of information that has come to me as a result of sending a copy of my Wohler paper to Dr. F. W. Frerichs, 4557 W. Pine Blvd., St. Louis, Missouri. As you may know, he was a t one time connected with the Mallinckrodt Chemical Co., and then became a member of the firm of Herf and Frerichs, Manufacturing Chemists. Concerning Wohler he writes: "I had the great privilege to work under Wohler's direction for 9 years and owe to him whatever success I made in my profession." But what is even of more interest is the following: "I notice that on page 1550 of your paper you refer to a plaque of Wohler, the origin of which is unknown to you. The plaque resembles very much a plaque which I saw on the occasion of the annual meeting of the American Chemical Society in Pittsburgh, Pa., in 1892, when we inspected the plant of the Aluminum Co. of America in New Kensington, Pa., where the first two furnaces making less than 100 pounds of aluminum per day by the Hall process were operated for our benefit. The Company had cast in aluminum a plaque similar to the one you describe, about 8 in. in diameter, and sold it to the visitors a t one dollar apiece. I bought one but lost it in a fire which destroyed my office about 12 years ago, and for this reason I cannot give the exact dimensions. Possibly the specimen you hold is of the same origin." I thought you might be interested in getting a possible explanation of the plaque of unknown origin, especially as it seems to have been connected with an early meeting of the American Chemical Society. WILLIAMH. WARREN CLAREUNIVERSITY WORCESTER. MASS.
' See THISJOURNAL, 5, 1550 (Dec., 1928). Any further information concerning this plaque will be apprcciatcd
