One copy, one year, postage included =$3 00= One copy, six months, postage included =1 50= =Clubs.=--One extra copy of THE SCIENTIFIC AMERICAN will be supplied gratis for every club of live subscribers at $3.00 each; additional copies at same proportionate rate. Postage prepaid. Remit by postal or express money order. Address MUNN & CO., 361 Broadway, corner of Franklin Street, New York. The Scientific American Supplement is a distinct paper from the SCIENTIFIC AMERICAN. THE SUPPLEMENT is issued weekly. Every number contains 16 octavo pages, uniform in size with SCIENTIFIC AMERICAN. Terms of subscription for SUPPLEMENT, $5.00 a year, postage paid, to subscribers. Single copies, 10 cents. Sold by all newsdealers throughout the country. =Combined Rates.=--The SCIENTIFIC AMERICAN and SUPPLEMENT will be sent for one year, postage free, on receipt of _seven dollars_. Both papers to one address or different addresses as desired. The safest way to remit is by draft, postal order, express money order, or registered letter. Address MUNN & CO., 361 Broadway, corner of Franklin Street, New York. Scientific American Export Edition. The SCIENTIFIC AMERICAN Export Edition is a large and splendid periodical, issued once a month. Each number contains about one hundred large quarto pages, profusely illustrated, embracing: (1.) Most of the plates and pages of the four preceding weekly issues of the SCIENTIFIC AMERICAN, with its splendid engravings and valuable information; (2.) Commercial, trade, and manufacturing announcements of leading houses. Terms for Export Edition, $5.00 a year, sent prepaid to any part of the world. Single copies, 50 cents. [Illustration] Manufacturers and others who desire to secure foreign trade may have large and handsomely displayed announcements published in this edition at a very moderate cost. The SCIENTIFIC AMERICAN Export Edition has a large guaranteed circulation in all commercial places throughout the world. Address MUNN & CO., 361 Broadway, corner of Franklin Street, New York. NEW YORK, SATURDAY, FEBRUARY 26, 1887. Contents. (Illustrated articles are marked with an asterisk.) Architecture, naval, during last half century 127 Armament, British, at Victoria* 131 Army, peace, of the United States 129 Aurora borealis* 135 Beam caloric engine* 127 Bench and ironing board, combined* 131 Birds, incendiary 133 Birds, phosphorescent 133 Birds, winter, our* 133 Blind stop, improved* 131 Books and publications, new 138 Boots or shoes, crimping, device for* 131 Brush and comb cleaner* 132