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Still, these lapses, however unaccountable, deduct but little from an admirable whole. Space forbids me to dwell upon such brilliant things as the description-one-sided, to be sure-of the spiritual change which came over the disciples after the Ascension, or the historical survey of the conception of sin and atonement. I will end with one point taken from the opening pages (p. viii.), because it shows incidentally how mistaken the cleverest man can be as to his own nature and powers. I have no sympathy with vagabonds and talkers who try to reform society by taking men away from their regular productive work and making vagabonds and talkers of them too and if I had been Pilate I should have recognised as plainly as he the necessity for suppressing attacks on the existing social order, however complete that order might be, by people with no knowledge of government and no power to construct political machinery to carry out their views, acting on the very dangerous delusion that the end of the world was at hand." This is written by one who thinks more of improving institutions than of saving men. Surely there are at least two great types of teachers-those who serve as models and those who serve as correc- tives. The followers of say, an ideal teacher of chemistry or philosophy will wish to be like their master, to do what he does, to imitate his methods, his language, even his mannerisms and dress. Other teachers work by acting and stating an extreme, so that a perverted society, by aiming at its own "A Manual of Mendelism." James Wilson. A. & C. Black. 150 pp. No part of the study of plants and animals is more fascinating that that relating to the complicated phenomena of heredity. For generations attempts have been made to discover the laws that govern the transmission and distribution of parental qualities among the progeny. It was natural that much attention should be paid to problems arising from the crossing of individuals belonging to distinct varieties of the same species, but all the experiments in hybridization led to no result until the problem was attacked from a new standpoint by Gregor Mendel, the monk of Brunn. Mendel, working for eight years in the quietness of the monastery garden, published his results, in 1865, in a papei, admirable for its lucidity, in which for the first time the elementary principles of hybridization were explained opposite, may reach the true centre. To take a trivial instance, the writing-master affects to require of us a script like the flawless copper-plate at the head of the page. But neither he nor anyone else really wishes us all to write with such unanimous perfection when we leave school; the aim is to impart a due amount of uniformity to chaos. And it is a mistake to imagine that the Christian's ambition should be to imitate the life and acts of his Master we cannot and should not all travel the highways and lanes of the world preaching the Gospel. This is the enormous fault of that American work which had an overwhelming vogue some twenty or less years ago-In His Steps. But I need not labour the point. In brief, Christ and His apostles left family and trade to wander homelessly in order that countless homes might be homes indeed, that the ploughman and the clerk might labour in the furrow or at the desk as conscious partakers in the work and destiny of the Universe. And, as I hinted before, it is only considerations like these which allow us to regard Bernard Shaw as a citizen of the highest value to our community. He stands for the extreme of logical clearness and courage, for the insistence on social solidarity to the detriment of lesser loyalties, trampling upon emotion, denying the existence of half lights. This is one way to rescue us from the anti-social basenesses which degrade commerce, politics, even marriage. But we must not follow him further than to the centre. REVIEWS and the results expressed with the exactitude of mathematical formulae. For 35 years, however, his epoch-making work was first ignored and then for- gotten. The simultaneous rediscovery of the paper, about 1900, by a number of biologists working independently, forms a chapter of scientific romance, and to-day there is no student of biology ignorant of the name of Mendel, and Mendelism has become one of the most important branches of genetics. This little book attempts to condense within the limits of 150 pages the voluminous and exceedingly complicated results of some of the most important of Mendelian experiments connected with the im- provement of stock. One result of this compression is that the elementary principles of the science are not fully explained, so that the book is not of much use to the beginner. To the student who is assisted by lectures on the subject, it may prove of consider-