NEW YORK, JULY 9, 1881
Reading edition
Scientific American Supplement. Vol. XI, No. 288.
Scientific American established 1845
Scientific American Supplement, $5 a year.
Scientific American and Supplement, $7 a year.
TABLE OF CONTENTS.
I. ENGINEERING AND MECHANICS--Dry Air Refrigerating Machine. 5 figures. Plan, elevation, and diagrams of a new English dry air refrigerator
Thomas' Improved Steam Wheel. 1 figure
The American Society of Civil Engineers. Address of President Francis, at the Thirteenth Annual Convention, at Montreal. The Water Power of the United States, and its Utilization
II. TECHNOLOGY AND CHEMISTRY.--Alcohol in Nature. Its presence in earth, atmosphere, and water. 6 figures. Distillatory apparatus and (magnified) iodoform crystals from snow water, from rain water, from vegetable mould, etc.
Detection of Alcohol in Transparent Soaps. By H. JAY
On the Calorific Power of Fuel, and on Thompson's Calorimeter. By J.W. THOMAS
Explosion as an Unknown Fire Hazard. A suggestive review of the conditions of explosions, with curious examples
Carbon. Symbol C. Combining weight. 12. By T. A. POOLEY Second article on elementary chemistry written for brewers
Manufacture of Soaps and their Production. By W. J. MENZIES
The Preparation of Perfume Pomades. 1 figure. "Ensoufflage" apparatus for perfumes
Organic Matter in Sea Water
Bacteria Life. Influence of heat and various gases and chemical compounds on bacteria life
On the Composition of Elephant's Milk. By Dr. CHAS. A. DOREMUS. Comparison of elephant's milk with that of ten other mammals
The Chemical Composition of Rice. Maize, and Barley. By J. STEINER
Petroleum Oils. Character and properties of the various distillates of crude petroleum. Fire risks attending the use of the lighter petroleum oils
Composition of the Petroleum of the Caucasus. By P. SCHULZENBERGER and N. TONINE
Notes on Cananga Oil. or Ilang-Ilang Oil. By F. A. FLÜCKIGER. 1 figure. Flower and leaf of Cananga odorata
Chian Turpentine, and the Tree which Produces It. By Dr. STIEPOWICH. of Chios, Turkey
On the Change of Volume which Accompanies the Galvanic Deposition of a Metal. By M. E. BOUTY
Analysis of the Rice Soils of Burmah. By R. ROMANIC, Chemical Examiner, British Burmah
III. PHYSICS AND PHYSICAL APPARATUS.--Seyfferth's Pyrometer. 7 figures.--Pyrometer with electric indicator.--Method of mounting by means of a cone on vacuum apparatus.--Mounting by means of a sleeve.--Mounting by means of a thread on a tube.-- Mounting by means of a clasp in reservoirs.--The pyrometer mounted on a bone-black furnace.--Mounted on a brick furnace
Delicate Scientific Instruments. By EDGAR L. LARKIN. An interesting description of the more powerful and delicate instruments of research used by modern scientists and their marvelous results
The Future Development of Electrical Appliances. Lecture by Prof. J. W. PERRY before the London Society of Arts.--Methods and units of electrical measurements
Researches on the Radiant Matter of Crookes and the Mechanical Theory of Electricity. By Dr. W. F. GINTL
Economy of the Electric Light. W. H. PREECE'S Experiments Investigations
On the Space Protected by a Lightning Conductor. By WM. H. PREECE.--5 figures
Photo-Electricity of Fluor Spar Crystals
The Aurora Borealis and Telegraph Cables
The Photographic Image: What It Is. By T. H. MORTON. 1 figure.--Section of sensitive plate after exposure and during development
Gelatine Transparencies for the Lantern
An Integrating Machine. By C. V. BOYS.--1 figure
Upon a Modification of Wheatstone's Microphone and its Applicability to Radiophonic Researches. By ALEX. GRAHAM BELL,--2 figures
IV. ARCHITECTURE.--Suggestions in Architecture, 1 figure.--A pair of English cottages. By A. CAWSTON