1881. Question 1.—Sound is said to travel about four times as fast in water as in air. How has this been proved? State your reasons for thinking whether sound travels faster or slower in oil than in water. <p 184> Answer(a).—Mr. Colladon, a gentleman who happened to have a boat, wrote to a friend called Mr. Sturm to borrow another boat and row out on the other side of the lake, first... more...

ACT I It is half-past nine of a July evening. In a dining-roomlighted by sconces, and apparelled in wall-paper, carpet, andcurtains of deep vivid blue, the large French windows betweentwo columns are open on to a wide terrace, beyond which are seentrees in darkness, and distant shapes of lighted houses. On oneside is a bay window, over which curtains are partly drawn.Opposite to this window is a door... more...

Introductory. When I was a child, I used to hope my fairy-stories were true. Since reaching years of discretion, I have preferred acknowledged fiction. This inconsistency, however, is probably rather apparent than real. Experience has taught me that the greater the fairy-story the less the truth; and contrariwise, that the greater the truth the less the fairy-story. In other words, the artistic graces... more...

THE TEMPERATURE OF THE EARTH AS SHOWN BY DEEP MINES. At a recent meeting of the American Society of Civil Engineers, observations on the temperature of the earth, as shown by deep mines, were presented by Messrs. Hamilton Smith, Jr., and Edward B Dorsey. Mr. Smith said that the temperature of the earth varies very greatly at different localities and in different geological formations. There are decided... more...

PREFATORY NOTE. T HE Pierpont Morgan Library, itself a work of art, contains masterpieces of painting and sculpture, rare books, and illuminated manuscripts. Scholars generally are perhaps not aware that it also possesses the oldest Latin manuscripts in America, including several that even the greatest European libraries would be proud to own. The collection is also admirably representative of the... more...

CHAPTER I. Return to Chappaqua—A Walk over the Grounds—The Sidehill House—Our First Sunday at Chappaqua—Drive to Mount Kisco—A Country Church—A Dame Châtelaine—Our Domestic Surroundings. CHAPPAQUA, WESTCHESTER Co., New York, May 28, 1873 Again at dear Chappaqua, after an absence of seven months. I have not the heart to journalize tonight, everything seems so sad and strange. What a year... more...

Chapter One. I was just sixteen when I ran away to sea. I did not do so because I had been treated unkindly at home. On the contrary, I left behind me a fond and indulgent father, a kind and gentle mother, sisters and brothers who loved me, and who lamented for me long after I was gone. But no one had more cause to regret this act of filial disobedience than I myself. I soon repented of what I had... more...

I.—GENERAL PROGRESS. This of ours is a conceited century. In intense self-consciousness it exceeds any of its late predecessors. Its activity in externally directed thought is accompanied by an almost corresponding use of introverted reflection. Its inheritance, and the additions it has made, can make or will make thereto, supply an ever-present theme. It delights to stand back from its work, like... more...

CHAPTER I. INTRODUCTORY. The Nitro-Explosives—Substances that have been Nitrated—The Danger Area—Systems of Professors Lodge, Zenger, and Melsens for the Protection ofBuildings from Lightning, &c. The manufacture of the various nitro-explosives has made great advances during late years, and the various forms of nitro-compounds are gradually replacing the older forms of explosives, both for... more...

At the present day no clear and consistent opinion seems to be held regarding Classical Philology. We are conscious of this in the circles of the learned just as much as among the followers of that science itself. The cause of this lies in its many-sided character, in the lack of an abstract unity, and in the inorganic aggregation of heterogeneous scientific activities which are connected with one... more...