COLLIER'S HOUSEHOLD NUMBERS (issued the last week in each month) have had a success unprecedented in the history of weekly journalism, and their popularity is still increasing. The series of Conan Doyle's famous "Sherlock Holmes" detective stories, each complete in an issue, are now running in these Household Numbers. The exquisite double-page drawings by Charles Dana Gibson are a feature of this series. COLLIER'S FICTION NUMBERS (issued the second week in each month) are virtually magazines in themselves; rich in Art and abounding in good stories. The cream of the prize-winning stories in Collier's recent $8,000 Short Story Contest (in which 12,000 stories were entered) will appear during the coming year in these Fiction Numbers. The double-page features will be by Frederic Remington, reproduced in full color; the cover designs by Jessie Willcox Smith and others 10 CENTS A COPY, ALL NEWSDEALERS $5.20 A YEAR SCIENTIFIC AMERICAN ESTABLISHED 1845 _FOR SIXTY YEARS_ the _Scientific American_ has presented in a popular form the progress of science, invention and industry. No periodical contains so vast a fund of trustworthy information on timely topics of the day. Each issue is profusely illustrated. It contains articles on such subjects of special interest as the latest discoveries in the Scientific World, the development in Electricity, Engineering, Machinery, Automobiles, Natural History, Marine Architecture in all its branches, Yachting, etc. Furthermore, each number contains a special column of brief Notes on Science, Engineering, Automobiles, etc. A special Department on Patents is published every second or third number. This contains descriptions and illustrations of interesting and novel inventions, Personal Notes about inventors and Legal Decisions in Patent, Trade-mark and Copyright cases, etc., digested in a popular and readable style. Inquiries in regard to physics, hydraulics, electricity, etc., are answered free of charge in our "Notes and Queries Department." We have special correspondents in various parts of the country, also in London and Paris, who contribute to our columns weekly. SUBSCRIPTION $3 A YEAR. SCIENTIFIC AMERICAN BUILDING MONTHLY ESTABLISHED 1885 Is a handsomely illustrated architectural journal of interest not only to professional architects, but especially to those who intend to build their own houses. _The Building Monthly_ Contains Illustrations of houses of all sizes and styles, with full plans. Descriptions of houses illustrated and cost of construction. Monthly comments on architectural matters. Talks with artists and architects. Articles on landscape and domestic gardening. Fire protection; the household; housing problems; and the country house. Legal notes of value to Architects and Builders. Patents of interest to the architect and house owner. The best examples of interior decoration and furniture. SUBSCRIPTION PRICE $2.50 A YEAR