Modes of research in genetics / by Raymond Pearl.

  • Raymond Pearl
Date:
1915
Catalogue details

Licence: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

Credit: Modes of research in genetics / by Raymond Pearl. Source: Wellcome Collection.

    47/204 page 35
    A CRITICAL EXAMINATION 35 cal, observational method. It is essentially a static method. It labors constantly under the very serious danger of error which inheres in inferring the course and nature of dynamic events by observation only of their static ante¬ cedents or consequences. In the second place, the technical difficulties of the material make it, in most instances, practically impossible to apply the experimental method directly to the cytological side of the problem of heredity. In spite of these limitations, cytology has made and will continue to make fundamental contributions to the progress of research in heredity. It is one of the essential methods of investigation in this field. 4. The EmbryologicaL Embryology has chiefly been cultivated for its own ends, which are, on the one hand, those of descriptive morphology and, on the other hand, those of a special field of physiology, Entwick¬ lung smechanik. Only in a relatively small pro¬ portion of instances has it been directly and pur¬ posefully used as a mode of research in genetics. Yet embryology is the science of somatogenesis, which was shown at the beginning to be one of the fundamental elements of the problem of heredity. It is a little difficult to understand why, with such splendid opportunities as the em- bryological method offers, so little light regarding the hereditary process seems to have come from the embryologist. To say this is not in the least
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