Nitro-Glycerin. Professor Doremus of this city was called as a witness at the inquest upon the bodies of the unfortunate persons killed by the recent explosion at Bergen, N.J. The Professor having previously analyzed some of the explosive mixture, testified as follows:—"I have subjected it to chemical analysis, and find it to correspond to the formula C_{6}, H_{3}, O_{3}, and NO_{5}; it is well... more...

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...

SONG I.Boethius' Complaint.Who wrought my studious numbersSmoothly once in happier days,Now perforce in tears and sadnessLearn a mournful strain to raise.Lo, the Muses, grief-dishevelled,Guide my pen and voice my woe;Down their cheeks unfeigned the tear dropsTo my sad complainings flow!These alone in danger's hourFaithful found, have dared attendOn the footsteps of the exileTo his lonely... 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...

INTRODUCTION I have called this little collection of articles which I have written “THREE THINGS” because to me there seem to be just three essentials to strive after in life. Truth—Common Sense and Happiness. To be able to see the first enables us to employ the second, and so realise the third. And in these papers I have tried to suggest some points which may be of use to others who, like... 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...

CHAPTER I. INTRODUCTORY. The Sun. The sun's position in the great field of energy is daily becoming more exalted in the estimation of philosophic minds. His labors are being revealed to us with a distinctness never before conceived. He it is that stored the coal in the bosom of the earth, and piled up the polar ice. He it is that aids the chemist, drives the engine, ripens the harvest, dispenses... more...

INTRODUCTION. In an article, entitled "Then and Now," published in the December number, 1890, of "The Arena," its author, a distinguished Unitarian D.D. of Boston, Mass., says. "Astronomy has shattered the fallacies of Astrology; and people have found out that the stars are minding their own business instead of meddling with theirs." Now, while it is true that modern Astronomy... 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...