Scientific American
The Weekly Journal of Practical Information
THE SCIENTIFIC AMERICAN, founded over sixty-seven years ago (1845), has become to-day the official organ of those people who really do things, and want to know what others are doing; it is for the one whose whole business success depends upon these great mechanical, chemical, electrical and engineering achievements, which are rapidly and surely making this nation.
THE SCIENTIFIC AMERICAN is the authority; it is always up to date; and gives its readers the first news as well as the most complete news of any new development in the Sciences, Arts, Manufactures, etc. Some of the department features are:
HANDY MAN'S WORKSHOP.—In this department those who use tools either for pastime or profit will find suggestions which will be helpful.
HANDY MAN'S LABORATORY.—This is a department of Experimental Science with many useful and interesting experiments along the lines of modern scientific thought.
NOTES AND QUERIES DEPARTMENT.—In which is published replies to our correspondents, embracing the widest range of topics. An able corps of experts is engaged to attend to this correspondence and the service is free to our subscribers.
INVENTORS' DEPARTMENT.—In these columns inventors have their say; their trials and tribulations and final successes are fully discussed. Inventors are also given an opportunity to present their mechanical ideas to the world. There is also a column of "Patent Office Notes" and a column of "Legal Notes" in which questions of Patent Law, about which inventors and manufacturers should be informed, are briefly and simply elucidated.
CURIOSITIES OF SCIENCE AND INVENTION is a department of notes in which all the curious and ingenious ideas of the day are illustrated and briefly described.
The "Scientific American" is published weekly and a year's numbers contain over 1200 fine illustrations and about twice as much text as a standard magazine. Subscription price, $3.00 per year; $1.50 for six months.
Sample copy free.
The Scientific American
Cyclopedia of Formulas
Edited by
ALBERT A. HOPKINS
OCTAVO. 1077 PAGES. 15,000 RECEIPTS
Cloth, $5.00. Half Morocco, $6.50. Postpaid
This valuable work, which is partly based on the twenty-eighth edition of "The Scientific American Cyclopedia of Receipts, Notes and Queries," contains a collection of about 15,000 selected formulas, covering nearly every branch of the useful arts and industries. Never before has such a large collection of valuable formulas, useful to everyone, been offered to the public.
This work may be regarded as the product of the studies and practical experience of the ablest chemists and workers in all parts of the world, the information given being of the highest value, condensed in concise form, convenient for ready use. Almost every inquiry that can be thought of relating to formulas used in the various manufacturing industries will here be found answered.
The formulas are classified and arranged into chapters containing related subjects, while a complete index, made by professional librarians, renders it easy to find any formula desired.
Those engaged in any branch of industry will probably find in this volume much that is of practical use in their respective callings. Those in search of salable articles which can be manufactured on a small scale, will find hundreds of most excellent suggestions. It should have a place in every laboratory, factory and home.
An eight-page descriptive circular and complete table of contents will be furnished on application.