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rather large possible errors of the results of such experiments; arid for tliat purpose I used tlie material nearest at hand. I n order, Iio~vever, to prevent any further misapprehension, I desire to say tliat I fully concede Dr. Sturtevant's clai~n to priority; although, [VOL. V., NO. 118.doi:10.1126/science.ns-5.118.376 pmid:17840419 fatcat:eom7m3hhcbfkvkwofq3zdu6ogq