portant differences between the arc and the incandescent lamp. 6. The ends of a pole 8 feet long rest upon the shoulders of two men, A and B. If a weight of 100 pounds is suspended from the pole, 2 feet from A, what weight does each man support? 7. A conical tank, the diameter of whose base is 2 feet, and whose altitude is 3 feet, is full of water. Allowing a cubic foot of water to weigh 621⁄2 pounds, what is the pressure upon the bottom of the tank? 8. Make a drawing of a siphon, and explain its action. 9. Describe a process of making ice artificially? What is the underlying principle involved in the operation? 10. (a) What is osmose? Give an example of osmose (b) in animal life; (c) in vegetable life. water to freeze. (b) The principle involved is that rapid evaporation of a liquid or gas absorbs a great quantity of heat, thus producing low temperature. 10. (a) Osmose is the interchange of fluids through the medium of a thin substance. (b) The interchange of oxygen and carbonic acid gas in the lungs is an example of osmose in animal life. (c) The interchange of oxygen and carbonic acid gas in the foliage of plants is an instance in vegetable life. (b) A siphon consists of a bent tube, one arm of which is longer than the other. Having been filled with water to expel the air, the short arm is inserted in the water in vessel a, and the pressure of the air upon the surface of the water in the vessel causes a steady flow until the short arm is uncovered, or until the water in the two vessels stands at the same level. 9. The heating of a vessel containing a solution of ammonia causes condensation of the ammonia, which, upon being rapidly cooled, will boil under the reduced pressure. In boiling the ammonia absorbs much heat from the water, thus producing considerable cold and causing the 7. 8. 9. A is 60 ft. in height. B is 45 ft. in height. 10. Same as question. HAUNTED HOUSES. All houses wherein men have lived and died We meet them at the doorway, on the stair, A sense of something moving to and fro. There are more guests at table than the host's Is thronged with quiet, inoffensive ghosts, The stranger at my fireside cannot see We have no title-deeds to house or lands; The spirit-world around this world of sense A vital breath of more ethereal air. Our little lives are kept in equipoise By opposite attractions and desires; The struggles of the instinct that enjoys, And the more noble instinct that aspires. These perturbations, this perpetual jar Of earthly wants and aspirations high, Come from the influence of an unseen star, An undiscovered planet in our sky. THE HE College of Agriculture of Cornell University offers a course in nature study to the teachers of New York State in the summer of 1899, beginning July 5th and continuing six weeks. Tuition is free to residents of this State. The nature-study idea gains impetus every day. It is one of the most important educational movements of the time. Its motive is to educate the child nature-ward, and to use less of textbooks and more of things and phenomena. It will contribute to the checking of the rush cityward, and to improve and revive the country. The nature-study movement has attained a large growth at Cornell University, under the auspices of a State grant which is designed to promote the extension of agricultural knowledge. Nearly 25,000 teachers in New York State are now receiving, at their own request, the naturestudy publications of the College of Agriculture. There has arisen a demand among teachers for more specific and personal instruction in the subject. To supply this demand, a School of Nature Study is proposed for the summer of 1899. It will begin on July 5th and continue for six weeks. This school is for the benefit of teachers of New York State. Tuition is free to those living in this State. Instruction is to be given in three departments: These three subjects comprise a complete course. Students entering this course must take all of it, and must devote their entire time to it. The instruction will consist of lectures, text-book work, laboratory work, and field excursions. The university farm, laboratories, and the country round about Ithaca will be the class-rooms. Both the methods and facts of nature study will receive close attention. It is the purpose of the school to give the student such training as to enable him to take up nature study work in his own teaching. Delicious Horsford's Acid Phosphate with water and sugar only, Allays the thirst, aids di- Dr. H. M. Henry, New York, says: "When completely tired out by prolonged wakefulness and overwork, it is of the greatest value to me. beverage it possesses charms beyond anything I know of in the form of medicine." Descriptive pamphlet free. As a BB. Laboratory work in the methods of nature study with insects, made available for secondary schools. By Assistant Prof. A. B, Comstock and Assistant Prof. Herrick. Wednesdays and Fridays will be devoted to insect study, 9 o'clock till 5. McGraw Hall. PLANT LIFE. C. Lectures, laboratory work and excursions. Special attention will be given to the habits and characteristics of growing plants, both wild and cultivated. Gardenmaking will receive attention. Tuesdays and Thursdays, 9 to 5, will be devoted to plant study. Morrill Hall and Forcing-houses. In charge of Prof. Bailey. A HOME IN THE SOUTH. THE Great Southern Railway, covering the South like a network, and penetrating with its 6,000 miles every important section, offers unequalled facilities, with its magnificent trains and quick transit, to tourists, and especially to those seeking a home during the severe northern winter months. There are thousands in New England and the Middle West who ought to own such a home in the South on account of the climate, if for no other reason. Commence now! Establish that home! Buy a small tract of land and gradually improve it. A section especially attractive is the fertile mountainous region of Western North Carolina. Here is located the famous health resort, Asheville, visited annually by thousands from all parts of the continent. An opportunity out of the usual course is just now given through the enterprise of nearly 200 educators, business men, ministers and social economists, who have purchased nearly seven square miles of land in the heart of these mountains, on the Southern Railway, and are opening this famous section for home life under ideal conditions. All property is held for the common good, and while lots of generous size are set aside to subscribers, the price and terms are such as to make it in fact nominal, and there is no money making or personal profit. Among the managers and lot-holders in the town of considerable importance already established are Mr. John S. Huyler, head of "Huyler's Candies; " Mr. Wm. H. Wanamaker, of Philadelphia, brother of ex-Postmaster-General Johr Wanamaker; Rev. David Gregg, D. D., pastor of Lafayette Avenue Presbyterian Church, Brooklyn, N. Y.; President E. D. Eaton, of Beloit College; Dr. B. L. Lambert, ex-President of the Board of Aldermen, New Haven, Conn.; Mr. C. N. Crittenton, of New York; Rev. H. H. Kelsey, of Hartford, Conn.; Mr. H. R. Elliot, editor of The Church Economist; Rev. A. Dixon, of Brooklyn, N. Y., and over 200 others. Full particulars may be obtained from A. S. Thweatt, Eastern Passenger Agent, Southern Railway, 271 Broadway, New York. C. ARITHMETIC IN THE PUBLIC SCHOOLS. The Werner Arithmetics By FRANK H. HALL. THAT THEY ARE W HAT THEY DO FOR TEACHERS AND PUPILS In the Schools of the United States. WE WANT TO CORRESPOND with all who have found that "past methods" of teaching arithmetic are wrong and unsatisfactory, and who now wish to see a series of arithmetics based upon sound pedagogical principles. SUMMER COURSES IN NEW YORK CITY. NEW YORK UNIVERSITY has issued the announcement of its fifth summer session to be held at University Heights, July 10 to August 18. The following groups of courses will be offered by professors of the University: Mathematics, physics, chemistry, biology, Latin, Greek, psychology, history and Germanic languages. Over thirty courses will be given in all. Under certain conditions work completed in the summer session will be accepted as counting towards a degree in the University College or in the School of Pedagogy. The University has placed the libraries, recitation halls, laboratories, dormitories and athletic grounds of the college at the service of students taking the summer courses. The extensive grounds of the University at University Heights are most beautifully situated in the northern part of New York City, twelve miles from the Battery, overlooking the Harlem and Hudson Rivers and the Palisades of the Hudson. The location is certainly almost an ideal one for summer work. bay and the poison-soaked swamps of the interior. The sun, like a merciless yellow demon, beats down upon the dazzling walls and tiled roofs of Cavite, and humanity lies indoors panting for breath for life. Then in waking dreams I see the beauty of a summer's day in the Black Hills, the cool groves along the mountain streams, the well-beloved whisper of the pines in the upland parks, and, above all, the freshness of the mornings, when each tiny font of sweet perfume holds within its tender heart a tiny jewel. Those long, dreamy, hazy days! How many of us will know their beauty again; how many of us that now wear the brown and carry the musket in this place of heat and suffering will again feel the spell of their delicious restfulness? Time only can tell." Oh, hills of mine, could I again Just hear the music of thy rills; I'd give up all, all earthly things, Without one single heart-felt sigh, |