THE SCIENTIFIC AMERICAN SUPPLEMENT
No. 235,
For the Week ending July 3, 1880.
Price 10 cents. For sale by all newsdealers.
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| I. ENGINEERING AND MECHANICS.—The New Railway up Mount Vesuvius. 6 illustrations. Plan of road.—General view of mountain and railway.—Side view and end view of passenger car.— Mount Vesuvius Railway.—Map showing railway, mountain, crater, and surrounding country.—The carriage road and railway... | 3735 |
| The St. Gothard Tunnel —Notes on the junction of the two galleries. By Dr. Calladon... | 3736 |
| The St. Gothard Tunnel.—Conditions and causes of air currents in the tunnel... | 3736 |
| Protection of Ships from Loss by Fire and from Loss by Sinking. Recent improvements in the construction of ships and steamers... | 3738 |
| Regenerative Stoves.—A Sketch of their History and Notes on their Use. By John N. Hartman. An important paper read at the Pittsburg meeting of the American Institute of Mining Engineers. 1 figure... | 3738 |
| Cowper's Hot Blast Stoves. 2 full page illustrations of hot blast stoves for a pair of furnaces.—Plan and cross section of stove.—Plan and cross section of furnace.—Plan and cross section of gas downcomer.—Sectional elevation of stove and downcomer... | 3739 |
| Wilson's Lock-up Safety Valve. An important improvement. 10 figures... | 3742 |
| Working Low Grade Ores... | 3742 |
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The Largest Concrete Tank in England... | 3742 |
| II. ELECTRICITY, ETC.—Siemens' Improvements in Electric Railways. 4 figures. Siemens' combined steam and electric railway.—Siemens' electric mail railway... | 3743 |
| Difference in the Actions of Positive and Negative Electricity... | 3743 |
| Forces Exciting Electricity... | 3743 |
| The New Electrical Middlings Purifier. By Thos. B. Osborne. 5 figures... | 3744 |
| Physical Society, London. Photo—electricity.—Electrometer key. —Air in water.—Steam thermometer... | 3745 |
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Atmospheric polarization. Influence of terrestrial magnetism... | 3745 |
| III. HYGIENE AND MEDICINE.—Lead Poisoning. Clinical lecture by Dr. WM. Pepper. Effects of a cosmetic of carbonate of lead. —Symptoms of lead poisoning.—Affinity of lead for nerves and muscles.—Treatment of lead poisoning... | 3745 |
| Recent Investigations of the Blood... | 3746 |
| The Pulse. Lecture on the pulse in health and disease, by Dr. T. A. McBride... | 3746 |
| Some Early Symptoms of Insanity... | 3747 |
| An Improved Method of Applying Antiseptic Vapors... | 3747 |
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Treatment of Phthisis by Inhalation of Borax and Salicylic Acid... | 3747 |
| IV. CHEMISTRY AND TECHNOLOGY.—Detection of Starch in Cane Sugar. By P. Casamajor... | 3747 |
| Double Lever Cement Testing Apparatus. 1 figure... | 3748 |
| Prediction of Chemical Elements... | 3748 |
| Oil of Sage... | 3748 |
| Bronzing Iron... | 3748 |
| Rust Preventing Compound... | 3748 |
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Argentine Sheep and Wool... | 3748 |
| V. NATURAL HISTORY, ETC.—Brain of Limulus Polyphemus. General anatomy of the brain.—Internal structure and histology of the brain.—Comparison of the Limulus brain with the brain of other arthropods... | 3749 |
| An Unfortunate White Whale. A live whale with a broken neck... | 3749 |
| Ethereal Oil of California Bay Tree. By J. M. Stillman... | 3749 |
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Forest Trees of North America. Prof. Sargent's catalogue (continued
from Supplement No. 234). Cedars, Red Woods, Firs,
Spruces, etc.... | 3750 |