As far as I am able to judge, after long attending to the subject, the conditions of life appear to act in two ways directly on the whole organisation or on certain parts alone and in directly by affecting the reproductive system. With respect to the direct action, we must bear in mind that in every case, as Professor Weismann has lately insisted, and as I have incidently shown in my work on "Variation under Domestication," there are two factors: namely, the nature of the organism and the nature of the conditions. The ...
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As far as I am able to judge, after long attending to the subject, the conditions of life appear to act in two ways directly on the whole organisation or on certain parts alone and in directly by affecting the reproductive system. With respect to the direct action, we must bear in mind that in every case, as Professor Weismann has lately insisted, and as I have incidently shown in my work on "Variation under Domestication," there are two factors: namely, the nature of the organism and the nature of the conditions. The former seems to be much the more important; for nearly similar variations sometimes arise under, as far as we can judge, dissimilar conditions; and, on the other hand, dissimilar variations arise under conditions which appear to be nearly uniform. The effects on the offspring are either definite or in definite. They may be considered as definite when all or nearly all the offspring of individuals exposed to certain conditions during several generations are modified in the same manner. It is extremely difficult to come to any conclusion in regard to the extent of the changes which have been thus definitely induced.
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Very Good. 1968. Paperback. Good clean copy showing some age and reading wear, text clear and crisp and remains a nice copy.....We ship daily from our Bookshop.
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Good. All orders are dispatched within 1 working day from our UK warehouse. Established in 2004, we are dedicated to recycling unwanted books on behalf of a number of UK charities who benefit from added revenue through the sale of their books plus huge savings in waste disposal. No quibble refund if not completely satisfied.
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This is an ex-library book and may have the usual library/used-book markings inside. This book has hardback covers. In fair condition, suitable as a study copy. Re-bound by library. No date. Please note the Image in this listing is a stock photo and may not match the covers of the actual item, 400grams, ISBN:
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Very good. Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority!
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This is a used book in good condition and may show some signs of use or wear. This is a used book in good condition and may show some signs of use or wear.
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Good. Trade paperback (US). Glued binding. Audience: General/trade. Paperback 477 pages, good overall condition: tight binding, 10 pages with pen marks or writing, most pages are clean, cover worn and creased.
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This is an ex-library book and may have the usual library/used-book markings inside. This book has hardback covers. With usual stamps and markings, In poor condition, suitable as a reading copy. No dust jacket. Please note the Image in this listing is a stock photo and may not match the covers of the actual item, 250grams, ISBN: