Science/Nature Books

THE TEMPLE ON THE ACROPOLIS BURNT BYTHE PERSIANS. The excavations conducted by the Greek Archæological Society at Athens from 1883 to 1889 have laid bare the entire surface of the Acropolis, and shed an unexpected light upon the early history of Attic art. Many questions which once seemed unanswerable are now definitively answered, and, on the other hand, many new questions have been raised. When, in... more...

THE IMPORTANCE AND NATURE OF REFORMATION FROM SIN. This know also, that in the last days perilous times shall come; for men shall be lovers of themselves, covetous, boasters, proud, blasphemers, disobedient to parents, unthankful, unholy, without natural affection, truce breakers, false accusers, incontinent, fierce, despisers of those who are good, traitors, heady, high-minded, lovers of pleasure more... more...

ELECTRICAL LABORATORY FOR BEGINNERS. By GEO. M. HOPKINS. It is only when theory and practice, study and experiment, go hand in hand that any true progress is made in the sciences. A head full of theory is of little value without practice, and although the student may apply himself with all his energies for years, his time will, to a great extent, have been spent in vain, unless he by experiment rivets... more...

THE BRITISH SANITARY CONGRESS. ADDRESS OF PRESIDENT GALTON. The Congress of the Sanitary Institute of Great Britain was opened inNewcastle on September 26. The inaugural public meeting was held in theTown Hall. Prof. De Chaumont presided, in the place of the ex-President,Lord Fortescue, and introduced Captain Galton, the new President. The President commenced his inaugural address by thanking, in the... more...

WAGE EARNERS AND THEIR HOUSES. MANUFACTURERS AS LANDLORDS. Among the more prominent movements of the day for the improvement of the condition of the working men are those which are growing into fashion with large manufacturing incorporations. Their promise lies immediately in the fact that they call for no new convictions of political economy, and hence have nothing disturbing or revolutionary about... more...

TORPEDO SHIPS. Commander Gallwey lately delivered an interesting lecture on the use of torpedoes in war before the royal U.S. Institution, London, discussed H.M.S. Polyphemus, and urged as arguments in her favor: 1. That she has very high speed, combined with fair maneuvering powers. 2. That she can discharge her torpedoes with certainty either ahead or on the beam when proceeding at full speed. 3.... more...

IMPROVED FILTER PRESSES. Hitherto it has been found that of all the appliances and methods for separating the liquid from the solid matters, whether it is in the case of effluents from tanneries and other manufactories, or the ocherous and muddy sludges taken from the settling tanks in mines, some of which contain from 90 to 95 per cent. of water, the filter press is the best and the most economical,... more...

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...

LOCOMOTIVE FOR ST. GOTHARD RAILWAY. We give engravings of one of a type of eight-coupled locomotives constructed for service on the St. Gothard Railway by Herr T.A. Maffei, of Munich. As will be seen from our illustrations, the engine has outside cylinders, these being 20.48 in. in diameter, with 24 in. stroke, and as the diameter of the coupled wheels is 3 ft. 10 in., the tractive force which the... more...

THE FOUNTAIN OF HAPPINESS. The source and fullness of created good is the knowledge and enjoyment of God. "Give what thou wilt, without thee we are poor; and with thee rich, take what thou wilt away." The wicked are like a ship's crew at sea, carried by the winds upon unknown waters, without peace or safety until they can renew communications with the shore. A man alienated from his God is... more...