This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 Excerpt:...earth. r' = radius of moon, or other body. P = moon's horizontal parallax = earth's angular semidiameter as seen from the moon. f = moon's angular semidiameter. Now = P (in circular measure), r'-r = r (in circular measure);.'. r: r':: P: P', or (radius of earth): (radios of (...) moon):: (moon's parallax): (moon's semidiameter). Examples. 1. Taking the moon's horizontal parallax as 57', and its angular diameter as 32', find its radius in miles, assuming the earth's radius to be 4000 miles. Here moon's semidiameter = 16';.-. 4000::: 57': 16';.-. r = 400 16 = 1123 miles. 2. The sun's horizontal parallax being 8"8, and his angular diameter 32V find his diameter in miles. ' Am. 872,727 miles. 3. The synodic period of Venus being 584 days, find the angle gained in each minute of time on the earth round the sun as centre. Am. l"-54 per minute. 4. Find the angular velocity with which Venus crosses the sun's disc, assuming the distances of Venus and the earth from the sun are as 7 to 10, as given by Bode's Law. Since (fig. 50) S V: VA:: 7: 3. But Srhas a relative angular velocity round the sun of l"-54 per minute (see Example 3); therefore, the relative angular velocity of A V round A is greater than this in the ratio of 7: 3, which gives an approximate result of 3"-6 per minute, the true rate being about 4" per minute. Annual ParaUax. 95. We have already seen that no displacement of the observer due to a change of position on the earth's surface could apparently affect the direction of a fixed star. However, as the earth in its annual motion describes an orbit of about 92 million miles radius round the sun, the different positions in space from which an observer views the fixed stars from time to time throughout the year must be separated... (shrink)

Originally published in 1926, a complement to the author's Outline of Psychology, this book surveys the field of neurotic and mental disorders in so far as they are not due to gross organic lesions. A book, not for the medical expert only, but for every man or woman interested in the riddle of human personality.

First published in 1932, the original blurb states: "This is a simplified condensation of the author’s two volumes, _An Outline of Psychology_ and _An Outline of Abnormal Psychology_, which together give a comprehensive survey of the principles and findings of modern psychology. This is designed as an introduction to the scientific study of man and society for those who have not time or inclination to pursue the more recondite problems of mind. It is suitable for college use in the introductory (...) course. It concentrates on the dynamics of the human organism and aims to give the student that minimum acquaintance with psychology without which he is not fitted to be a citizen of the modern world." Today it can be read and enjoyed in its historical context. (shrink)

Originally published in 1929, McDougall examines the pertinent conflict between religion and science. His work exhibits the failure of scientists to explain human action mechanistically, establishes purposive action as a type of event radically different from all mechanistic events, and justifies the belief in teleological causation without which there can be neither religion nor morals. This title will be of interest to students of both the Humanities and Sciences, particularly those studying psychology and philosophy.

The words “idea” and “concept” have been, and still are, the source of so much confusion in psychology that we shall do well to banish them from the vocabulary of that science. I have urged this reform and have endeavoured to promote it by writing a psychology without ideas.It has seemed to me that the word “concept” plays a no less pernicious rôle in logic. But it was not until I began to look into the matter with a view to (...) writing this article that I became aware of the desperate degree and extent of the confusion obtaining in all that pertains to the concepts of logic. (shrink)

In a little book of 155 pages the late John Scot Haldane gave the world his final message. Much as his friends and admirers must regret his recent death, we may rejoice that in these few pages he has succeeded in presenting in clear and unmistakable fashion the philosophy which, throughout his long life of highly successful detailed research in physiology combined with equally effective and untiring application of his findings to practical problems, he slowly developed into the outlines of (...) a comprehensive and rounded system. (shrink)

Hesperides Press are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.

This book, first published 1931, examines the attitudes surrounding the natural sciences at the time of writing, and contends that an unreflective belief in the power of science, and especially in humanity's capacity to turn such knowledge to noble ends, could lead to catastrophic results for human civilisation. Commenting on the forced industrialisation in Russia, India and China that was proceeding with little regard for human life at the time, the unsustainable inequality generated by modern Western capitalism and many other (...) related issues, the author argues that it is necessary to devote the same energy to the resolution of social problems as to scientific research and development. His thesis, though expounded with reference to concrete situation different from our own, is nonetheless as relevant today as it was when first published. (shrink)

The problem of the relation between mechanism and purpose is of profound theoretical interest. It is the most fundamental of the great perennially disputed problems. And, unlike some other of the great unsolved problems, it is also of far-reaching and profound practical importance. The kind of answer we give to the question affects in a multitude of ways the conduct of our lives, the form and working of all our institutions, our science, our law, our politics, our economics, our morals, (...) our religion. (shrink)

The words “idea” and “concept” have been, and still are, the source of so much confusion in psychology that we shall do well to banish them from the vocabulary of that science. I have urged this reform and have endeavoured to promote it by writing a psychology without ideas.It has seemed to me that the word “concept” plays a no less pernicious rôle in logic. But it was not until I began to look into the matter with a view to (...) writing this article that I became aware of the desperate degree and extent of the confusion obtaining in all that pertains to the concepts of logic. (shrink)

There is at the present time a bewildering variety of schools of psychology in open rivalry and conflict with one another. The Press and the general public, in America, at least, seem to be aware of only two of these, namely the psychoanalytic and the behaviouristic schools; and the newspaper writers and the average highbrow are content to mix snippets and catchwords from these two utterly different schools, ignoring all the rest, unless they add to their shop-window display some uncertain (...) reference to the work of the mental testers. (shrink)