The Modern Psychology (Classic Reprint)

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Excerpt from The Modern Psychology The Chancellor of the University, Sir John Macfarland, presiding. Mr. Chancellor, Mr. Dean, Ladies and Gentlemen - Every human being is developed from a single cell or ovum, which, after fertilisation, undergoes a long and complex series of changes, by means of which there is produced a new individual which, within the limits of ordinary variation, is like the parents that gave it birth. From the study of these Changes are derived our conceptions of the nature of sex, of heredity, of variation, of differentiation, and of many of our most important notions concerning evolution, both of the individual and of the race. Subsequent to birth a further series of changes occurs, to which the term development is applied. These changes include the processes of growth, the development of muscle, the adaptation of the brain to its intellectual functions, and many others. Any or all of these post-natal changes may not proceed to full development, in which case the child will be more or less seriously hindered from performing the normal functions of adult life. If it be the nerve cells which do not attain full development, some form of feeble-mindedness must result. Subsequent to fertilisation the single-celled ovum divides into two segments or blastomeres. These divide to form a group of four segments, which again cleave into eight, and this process of binary cell division is continued until the original single-celled ovum becomes converted into a many celled mass, termed a morula. From this multi-celled morula there will eventually be developed the countless millions of cells which go to form the human body. With further development these cells will become specially modified to form the bone cells, liver cells, muscle cells, brain cells, and so on. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.