Amongst the great contributors to the Science of the Cell perhaps none has approached nearer the Holy of Holies—none so nearly tore aside the Veil of Isis, as H. P. B. has practically told us, than Professor Weissmann in his contribution on the Germ Plasm and the New Problem of Heredity as handled by him. Under the guiding hand of this savant we see the cell in a new light, we begin to see kingdom within kingdom; and had he but recognized the other side, had he but explored the dark side of the Moon, much more might have been written, many more mouths might have gaped and many more sceptics have smiled. Professor Weissmann however has found a mare’s nest. He has raised the devil, but forgotten to give him something to do, and as of old we cannot help exclaiming, what next! The cell of Weissmann like the cell of most other students, is a tiny ball of protoplasm with a central nucleus (the Holy of Holies, Fish Man, etc.) but unlike that of other writers, instead of containing more differentiated protoplasm, taking the forms of meaningless and accidental rods, our revered professor has discovered a Nest of Creators. He tells us that the greater portion of the cell does not in any way participate in the process of hereditary transmission. Nay, further still, not only does he regard the nucleus as the all important particle but to quote his own words: “The law that only a certain part of the nuclear matter is to be regarded as the hereditary substance appears to me to receive fresh support from all the more recent observations.”