Scientific American
II. TECHNOLOGY.--Iron and Steel.--By BARNARD SAMUELSON. The world's production of pig iron.--Wonderful uses and demands for iron and steel.--Progress of Bessemer steel.--Latest improvements in iron making.--Honors and rewards to inventors. --Growth of the Siemens-Martin proces...
The enormous production of steel has required the importation of large quantities of iron ore of pure quality from Spain, Algeria, and elsewhere, into this country, France, Belg...
10. Chapter 10The red spider is not correctly speaking an insect, though it is commonly spoken of as such, neither is it a spider, as its name would imply, but an acarus or mite. Whether its...
3. Chapter 3The exciting moment in boring a well is when a drill is penetrating the upper covering of sand rock which overlies the oil. The force with which the compressed gas and petroleum...
1. Chapter 1II. TECHNOLOGY.--Iron and Steel.--By BARNARD SAMUELSON. The world's production of pig iron.--Wonderful uses and demands for iron and steel.--Progress of Bessemer steel.--Latest...
8. Chapter 8By means of these exercises the chest is gently but effectively expanded in every direction and the elasticity of its walls promoted, the air cells are expanded, and the lungs a...
6. Chapter 6In the first place, that essential material, food, which is necessary to supply the waste and repair of all animal life, should be selected, given, or used according to good jud...
9. Chapter 9The mobility of air seems almost preternatural, when the proper conditions for setting a current in motion are supplied. But without a current established, it is surprising in t...
4. Chapter 4It must be noted that L is here measured in electrical measure, or, adopting the unit given by Dr. Siemens in the British Association Address, in joules. One joule equals approx...
7. Chapter 7The progress of tubercular consumption has been divided by pathologists into three stages. The first stage being that in which a deposit of tubercular matter occurs in the lung...
5. Chapter 5Being given any two stations, he puts into the ground at the first a copper plate, and at the second a zinc one, and connects the two by a line wire provided with two vibrating...
11. Chapter 11Strangely enough, these animals have their social distinctions almost as well defined as in the case of the human species. Thus, one herd will not, on any consideration, associa...