No. 235,
For the Week ending July 3, 1880.
Price 10 cents. For sale by all newsdealers.
PAGE
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
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
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
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
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
Forest Trees of North America. Prof. Sargent's catalogue
(continued from SUPPLEMENT No. 234). Cedars, Red Woods,
Firs, Spruces, etc. 3750
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