Reference Books

SECTION I - HISTORY, BIOGRAPHY, and TRAVELS Baker (Sir Samuel W.). THE NILE TRIBUTARIES OF ABYSSINIA, and the Sword-Hunters of the Hamran Arabs. By Sir Samuel W. Baker, M.A., F.R.C.S. With Portraits, Maps, and Illustrations. Third Edition, 8vo. 21s. Sir Samuel Baker here describes twelve months' exploration, during which he examined the rivers that are tributary to the Nile from Abyssinia,... more...

CERARGYRITE, a mineral species consisting of silver chloride; an important ore of silver. The name cerargyrite is a Greek form (from κέρας, horn, and ἄργυρος, silver) of the older name hornsilver, which was used by K. Gesner as far back as 1565. The chloro-bromide and bromide of silver were also included under this term until they were distinguished chemically in 1841 and... more...

CARNEGIE, ANDREW (1837-  ), American “captain of industry” and benefactor, was born in humble circumstances in Dunfermline, Scotland, on the 25th of November 1837. In 1848 his father, who had been a Chartist, emigrated to America, settling in Allegheny City, Pennsylvania. The raw Scots lad started work at an early age as a bobbin-boy in a cotton factory, and a few years later was engaged as a... more...

WHAT IS A LETTER? It is not so long since most personal letters, after an extremely formal salutation, began "I take my pen in hand." We do not see that so much nowadays, but the spirit lingers. Pick up the average letter and you cannot fail to discover that the writer has grimly taken his pen in hand and, filled with one thought, has attacked the paper. That one thought is to get the thing... more...

(Lat. _conventio_, an assembly or agreement, from _convenire_, to come together), a meeting or assembly; an agreement between parties; a general agreement on which is based some custom, institution, rule of behaviour or taste, or canon of art; hence extended to the abuse of such an agreement, whereby the rules based upon it become lifeless and artificial. The word is of some interest historically and... more...

CAT,properly the name of the well-known domesticated feline animal usually termed by naturalistsFelis domestica, but in a wider sense employed to denote all the more typical members of the familyFelidae. According to theNew English Dictionary, although the origin of the word “cat” is unknown, yet the name is found in various languages as far back as they can be traced. In old Western Germanic it... more...

CHAPTER I THE SELECTION AND TESTING OF A GLASS "O telescope, instrument of much knowledge, more precious than any scepter! Is not he who holds thee in his hand made king and lord of the works of God?"—John Kepler. If the pure and elevated pleasure to be derived from the possession and use of a good telescope of three, four, five, or six inches aperture were generally known, I am certain that... more...

INTRODUCTION For years this writer's aim was to visualize the armed Pennsylvanian of earlier days; how he went forth to fight his Indian foe, to slay the bison, moose, elk and smaller game, and on his expeditions to the fields of love: where his firearms and edged weapons originated. To create the living man his arms must be secured, and gradually the present collection was assembled. And he lived... more...

CERVANTES. A BIOGRAPHICAL SKETCH. The most trivial act of the daily life of some men has a unique interest, independent of idle curiosity, which dissatisfies us with the meagre food of date, place, and pedigree. So in the "Cartas de Indias" was published, two years ago, in Spain, a facsimile letter from Cervantes when tax-gatherer to Philip II., informing him of the efforts he had made to... more...

CONDUCTION, ELECTRIC. The electric conductivity of a substance is that property in virtue of which all its parts come spontaneously to the same electric potential if the substance is kept free from the operation of electric force. Accordingly, the reciprocal quality, electric resistivity, may be defined as a quality of a substance in virtue of which a difference of potential can exist between different... more...