CHAPTER I ACOUSTICS Telephony is the art of reproducing at a distant point, usually by the agency of electricity, sounds produced at a sending point. In this art the elements of two general divisions of physical science are concerned, sound and electricity. Sound is the effect of vibrations of matter upon the ear. The vibrations may be those of air or other matter. Various forms of matter transmit... more...

What is a Good Edition? A good edition should be a complete edition, ungarbled and unabridged. If the author is a classic, the format of the copy chosen should in some way represent the style of the author. Gibbon, for instance, should be in large octavo or quarto, with print of a size to correspond. This is not always possible, for English editions of books often aim at mere cheapness, and of many... more...

CHAPTER I THE FIELD FOR SPECIAL ARTICLES Origin of Special Articles. The rise of popular magazines and of magazine sections of daily newspapers during the last thirty years has resulted in a type of writing known as the "special feature article." Such articles, presenting interesting and timely subjects in popular form, are designed to attract a class of readers that were not reached by the... more...

CHAPTER IATTAINMENT OF MIND CONTROLThe Man of TomorrowThe men of the nineteenth century have harnessed the forces of the outer world. The age is now at hand that shall harness the energies of mind, new-found in the psychological laboratory, and shall put them at the service of humanity. Are you fully equipped to take a valiant part in the work of the coming years?The Dollars and Cents of Mental... more...

Foreword Here comes the English Luther in his twelfth visit to your home. In peasant boots, decorated by no star of worldliness nor even by the cross of churchliness, but by the Book from heaven pressed to his heart in a firm attitude of earnest prayer, he comes as the man of prayer and of the one Book, a familiar friend, to help you to live the simple Christian life. This volume of twenty-four... more...

1. The family from which I am derived is not an ignoble one, but hath descended all along from the priests; and as nobility among several people is of a different origin, so with us to be of the sacerdotal dignity, is an indication of the splendor of a family. Now, I am not only sprung from a sacerdotal family in general, but from the first of the twenty-four courses; and as among us there is not only... more...

CHAPTER I. From The Creation to The Fall. Gen. Chs. 1-3 Problems Solved. This simple narrative solves some of the great problems about which philosophers have speculated and before which scientists have stood baffled. Every child of the human race has asked, "What is the origin of the material world, what is the origin of life, and what is the origin of sin?" In general the philosophers held... more...

CHAPTER I INTRODUCTORY Wood turning has had a definite place in the commercial world for a great many years. It is used in various forms in making furniture and furniture parts, building trim, tool parts, toys, athletic paraphernalia and many other useful and beautiful articles in common use. When properly taught in the schools it is one of the most valuable types of instruction. It appeals to pupils... more...

CHAPTER I It has been our fate, among all the innumerable generations of mankind, to face the most frightful calamity that has ever befallen the world. There is a basic fact which cannot be denied, and should not be overlooked. For a most important deduction must immediately follow from it. That deduction is that we, who have borne the pains, shall also learn the lesson which they were intended to... more...

APPARATUS 1. 1. Carbon-Zinc Cell. Fig. 1. If you have some rubber bands you can quickly make a cell out of rods of zinc and carbon. The rods are kept apart by putting a band, B, around each end of both rods. The bare wires are pinched under the upper bands. The whole is then bound together by means of the bands, A, and placed in a tumbler of fluid, as given in . This method does not make first-class... more...