STONER 



5561 



STORAGE BATTERY 



lected for the monument both in the North and 

 in the South. The work will be directed by the 

 American sculptor, Gutzon Borglum; in his 

 biography (page 842) will be found other de- 

 tails of the enterprise. 



STO'NER, WINIFRED SACKVILLE, a daughter 

 of Lord Sackville of England, and a distin- 

 guished writer and teacher. She is the author 

 of Natural Education and other educational 

 books, and the founder of the Natural Edu- 

 cation Schools. Mrs. Stoner is perhaps best 

 known as the mother and teacher of Winifred 

 Sackville Stoner, Jr., who as a child was gener- 

 ally believed to be further advanced in her in- 

 tellectual development than anyone of her age 

 in America. In her Natural Education, Mrs. 

 Stoner describes the methods she employed in 

 teaching her daughter. Elsewhere in these vol- 

 umes (see article EDUCATION, subtitle Natural 

 Education, page 1929), Mrs. Stoner presents 

 briefly her educational creed. 



In order to apply her principles and train 

 teachers in her methods, she has founded natu- 

 ral-education schools in New York and one or 

 two other cities. But as the wife of John B. 

 Stoner, a surgeon in the United States Marine 

 Service, she has been obliged to change her 

 place of residence frequently according as Dr. 

 Stoner has been transferred from one hospital 

 to .another, so she has not been able to give 

 the continued personal attention to her schools 

 necessary for their complete development. Mrs. 

 Stoner is engaged in many charitable enter- 

 prises and political movements affecting the 

 legal status of women in America. She has also 

 devoted much time and energy to the promo- 

 tion of the Esperanto language. Both her daugh- 

 ter and herself have written textbooks in this 

 language, and have traveled around the world 

 lecturing on behalf of its adoption. M.V.O'S. 



STONE 'WALL, a town in Manitoba and a 

 residential suburb of Winnipeg, which lies 

 twenty-one miles to the southeast. Stonewall 

 and Winnipeg are connected by an electric line. 

 The town is situated in a prosperous agricul- 

 tural region in which also there are deposits 

 of building stone, lime and gravel. The chief 

 industrial establishments include grain eleva- 

 tors, lumberyards, a planing mill, stone quar- 

 ries and limekilns. Stonewall is the seat of a 

 collegiate institute. Population, 1,300. 



STONY POINT, a town in Rockland County, 

 New York, noted as the scene of one of the 

 most brilliant exploits of the Revolutionary 

 War. It is situated on the Hudson River at 

 the head of Haverstraw Bay, forty-two miles 



north of New York City, and is built on a 

 rocky promontory which the Americans forti- 

 fied shortly after the struggle with England be- 

 gan. In May, 1779, the fort was captured by 

 the English under Clinton, and a strong garri- 

 son was placed there. In July following, Gen- 

 eral "Mad Anthony" Wayne led an attacking 

 expedition to recover the fort. The Americans 

 advanced in two columns and surprised the 

 British, who immediately opened fire. The 

 Americans did not return the fire, but charged 

 with bayonets so impetuously that the fort, 

 with over 540 prisoners, was taken within thirty 

 minutes. The Americans lost fifteen, the Brit- 

 ish, sixty-three. The site of the fortifications 

 was acquired by the state in 1897 as a national 

 reservation, and the ruins of the fort may still 

 be seen. The summit contains a lighthouse 

 and fog-bell tower. Population in 1910, 3,651. 

 STORAGE BATTERY, stohr'ayj bat'eri. 

 The storage battery can be understood by any- 

 one who will perform the following simple ex- 

 periment: Connect four dry cells in series. 

 With two wires connect two strips of lead to 

 the terminals of 

 the battery of dry 

 cells. The lead 

 strips should be 

 at least one inch 

 by four inches. Q 

 Place the lead 

 strips in a solu- 

 tion composed of >- 

 one part of strong 

 sulphuric acid to 

 twenty parts of 

 water. Bubbles 

 of hydrogen will 

 rise from one of 

 the lead strips 

 and a red coating will appear on the other. 

 After a few minutes disconnect the dry cells 

 and connect the lead strips to an electric bell. 

 The bell will ring. A storage battery has been 

 formed. The current from the dry cells has 

 produced a chemical change on the lead plates, 

 one of the plates becoming coated with an 

 oxide of lead (lead peroxide), the other re- 

 maining pure lead. 



These two plates, one lead, the other lead 

 peroxide, with the sulphuric acid, form a bat- 

 tery which acts like any other electric battery. 

 The acid acts more rapidly on the oxide of 

 lead than it does on the lead. When the two 

 plates are connected by an electrical conductor 

 this chemical action produces an electric cur- 



A STORAGE BATTERY 

 (a) Case; (&) grids. 



