Science/Nature Books

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...

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...

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...

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...

An officer of the Special Patrol Service dropped in to see me the other day. He was a young fellow, very sure of himself, and very kindly towards an old man. He was doing a monograph, he said, for his own amusement, upon the early forms of our present offensive and defensive weapons. Could I tell him about the first Deuber spheres and the earlier disintegrator rays and the crude atomic bombs we tried... more...

SUGAR MAKING IN LOUISIANA. The New Orleans Times contains, in a late number, an account of the manufacture of sugar as conducted on the Poychas estate, from which we extract portions containing the essential particulars of cane sugar making as conducted in the southern portions of the United States. "Reaching the Cane shed, the crop, dumped into piles, is received by a crowd of feeders, who place... more...

~With Discussion by Messrs. Allen Hazen, George A. Johnson,Morris Knowles, George C. Whipple, F. F. Longley, and E. D. Hardy.~ The Washington filtration plant has already been fully described.[2] At the time that paper was written (November, 1906), the filtration plant had been in operation for only about 1 year. It has now been in continuous operation for 5 years, and many data on the cost,... more...

LINKS IN THE HISTORY OF THE LOCOMOTIVE. It is, perhaps, more difficult to write accurate history than anything else, and this is true not only of nations, kings, politicians, or wars, but of events and things witnessed or called into existence in every-day life. In The Engineer for September 17, 1880, we did our best to place a true statement of the facts concerning the Rocket before our readers. In... more...

STEAM ENGINE VALVES. By THOMAS HAWLEY. In considering the slide valve in its simple form with or without lap, we find there are certain limitations to its use as a valve that would give the best results. The limitation of most importance is that its construction will not allow of the proper cut off to obtain all the benefits of expansion without hindering the perfect action of the valve in other... more...

With Discussion by Messrs. William Arthur Payne, and Eugene Klapp. A private yacht pier, built near Glen Cove, Long Island, has brought out a few points which may be of interest. It is an example of a small engineering structure, which, though of no great moment in itself, illustrates the adoption of means to an end that may be capable of very great extension. The problem, as submitted to the writer,... more...