I SHOULD be glad if room could be found for this small matter of personal explanation. I fear I may have misled one or two of your readers on a minor point. Those of them who are interested in the interpretation of hereditary phenomena may remember that in the number of this Journal for September 12, 1907, Mr. Punnett took a reviewer to task for saying that “No one has repeated Mendel's experiments with the deliberate intention of testing the Mendelian interpretation” (of the phenomena of inheritance). In my reply I was not content with defending my original position by justifying that statement; but I must needs carry the war into the enemy's country by taking Mr. Punnett to task for not including de Vries's papers in his list of memoirs dealing with repetitions of Mendel's actual experiments, in order to show how familiar I was with the literature of the subject.