Scientific American Supplement, No. 643, April 28, 1888

a, Fig. 2, shows an ordinary gear tooth, and b the form as changed; c and d show the two forms of the same width, but increased to six times the length. If the two are considere...

The use of concrete is becoming more and more general for foundation works. The desideratum hitherto has been a perfect and at the same time an economical mixer. Concrete can be...

These would average about four times the size of _Bacterium termo_; and when once they gain a place on and about the putrefying tissues, their relatively powerful and incessant...

Since that epoch, the passage of solid food has been either painful or difficult, and often followed by regurgitation. The food seemed to stop at the level of the pit of the sto...

Before proceeding further it will be of advantage to describe another tree-killing fungus, which has long been well known to mycologists as one of the commonest of our toadstool...

A new and most valuable method of determining the molecular weights of non-volatile as well as volatile substances has just been brought into prominence by Prof. Victor Meyer (_...

The delicate scent of orange flowers can be preserved quite unchanged by another and more gentle process, viz., that of maceration. It was noticed by some individual, whose name...

M. Estrade has also designed carriages. One has been constructed by MM. Reynaud, Bechade, Gire & Co., which has very few points in common with those in general use. Independentl...

Timber and Some of its Diseases.--By H. MARSHALL WARD.--The continuation of this important treatise on timber destruction, the fungi affecting wood, and treatment of the trouble...

A Catalogue of valuable books on Architecture, Building, Carpentry, Masonry, Heating, Warming, Lighting, Ventilation, and all branches of industry pertaining to the art of Build...