To the Editor.
—In his review of E. R. N. Grigg's book "Biologic Relativity," Duffy1 does a disservice to your readers. One expects that a reviewer summarize and distill the cardinal concepts in the book, to relate its contents to prevailing theories and fashions in the historico-scientific community, to indicate for what audience the book is apt to be of interest, to criticize with objective measure (not with unstated "unkind"1 innuendos) and to evaluate the author's effort even if thought wasted by the reviewer's mind. Instead, Duffy after tendentiously alluding to an introductory historic survey in the book—in truth, unrelated to Grigg's theme of biologic relativity—performs an abortion at the twenty-third page. Perhaps the Editor's benevolence will allow me to do what the reviewer should have done in the first place, ie, to inform the reader on the scope of Grigg's conception and its relation to accepted existing