placed over the teachers' platform in each school room, in full view of the pupils. A small bell is also placed above the teachers' platform in the lower room, with a wire attached, passing to the desk of the Principal, in the room above, by which the time of recesses, change of recitation classes, &c., are signified to the members of the lower rooms.

The school-rooms in the first and second stories are 50 feet square, and 13 feet in height-to each of which, two recitation rooms 12 by 23 feet are attached. The large rooms are furnished with "Kimball's improved School Chairs and Desks," placed in six ranges, extending back from the teachers' platforms, ten esks forming a range, and two chairs attached to each desk, furnishing accomodations in each room for 120 pupils-60 of either sex. Ample room yet emains in front of these ranges to increase the number of desks when the wants of the school demand them. The desks are four feet in length and one foot four inches in breadth, constructed of cherry, oiled and varnished. The moderately inclined tops are fixed to the end supporters, and the openings for books are in front of the pupils. Glass inkstands are inserted in the tops of the desks, and the ink protected from dust and the action of the atmosphere by mahogany covers turning on pivots. The chairs are constructed with seats of basswood, hollowed, and backs of cherry, moulded both to add beauty to the form of the chair, and to afford support and comfort to the occupants. Al are neatly stained and varnished, and they, as well as the desks, rest on iron supporters, firmly screwed to the floor.

The entire upper story is converted into a hall, being twelve feet in height at the walls, rising thence in an arch to the height of seventeen feet. This is appropriated to reading, and declamation, and for the female department of the school, to daily recess, and calisthenic exercises. A moderately raised platform is located at one end, above which an extended blackboard is placed, and settees are ranged around the walls; these, properly arranged, together with the settees from the lower rooms, which are easily transported above, speedily convert the open Hall into a commodious Lecture room,-and also adapt it to the purposes of public examinations and exhibitions.

In each of the two entrance rooms are placed the means of cleanliness and comfort, a pump of the most approved construction, an ample sink, two wash asins with towels, glass drinking tumblers, and a looking-glass. Ranges of hooks for hats, coats, bonnets, cloaks, &c., extend around the rooms, and are numbered to correspond with the number of pupils, of each sex, which the capacity of the house will accommodate. In the girls' room, pairs of small iron hooks are placed directly beneath the bonnet hooks, and twelve inches from the floor, for holding the over-shoes. In the boys' room, boot-jacks are provided to facilitate the exchange of boots for slippers when they enter the building-an important article, and of which no one in this department of the school is destitute. A thin plank, moderately inclined by hollowing the upper side, is placed upon the floor, and extends around the walls of the room, to receive the boots and convey the melted ice and snow from them, by a pipe, beneath the floor. A large umbrella stand is furnished in each of the two entrance rooms, also with pipes for conveying away the water. Stools are secured to the floors for convenience in exchanging boots, shoes, &c. Directly under the stairs is an OMNIUM GATHERUM-an appropriate vessel, in which are carefully deposited shreds of paper, and whatever comes under the denomination of litter, subject, of course, to frequent removal. These rooms, in common with the others, are carefully warmed. The wainscoting of the entrance rooms, and the stair case, is formed of narrow boards, grooved and tongued, placed perpendicularly, and crowned with a simple moulding. The railing of the stair case is of black walnut. A paneled wainscoting reaching from the floor to the base of the windows, extends around the walls of the remaining rooms. All the wood work, including the library and apparatus cases, is neatly painted, oak-grained, and varnished. The teachers' tables are made of cherry, eight feet in length, and two feet four inches in breadth, with three drawers in each, and are supported on eight legs. A movable writing desk of the same material is placed on each. Immediately in front of the teachers' desk in the upper room, a piano is to be placed, for use during the opening and closing exercises of the school, and for the use of the young ladies during the recesses. Venetian window blinds with rolling slats, are placed inside the windows, and being of a slight buff color, they modify the light without imparting a sombre hue to the room.

The building is warmed throughout by two of Hanks' Improved Air Heater, placed in the basement.

The ventilation of the school-rooms, or the rapid discharge of the air which has become impure by respiration, is most thoroughly secured in connection with a constant influx of pure warm air from the furnaces, by discharging ventiducts or flues, situated on each side of the building at the part of the rooms most distant from the registers of the furnaces. The ventiducts of each room are eighteen inches in diameter, and are carried from the floor entirely separate to the Stationary Top, or Ejector above the roof. The openings into the ventiducts, both at the top and bottom of the room, are two fect square, and are governed by a sliding door or blind.

A flight of stone steps leads to the front and main entrance of the building. The architectural entrance is of simple design, fourteen feet in width, and twenty feet in height. All the parts are wrought from dark colored stone, and on the crowning stone of the entablature, PUBLIC HIGH SCHOOL, appears in plain and prominent relief. Large folding doors, with side and top lights, close the entrance.

A side knob commands a bell suspended in the Library Room, directly behind the Principal.

A broad stone walk reaches from the steps to the street; flagging walks also extend from the street to the side entrances of the building, and thence to the outbuildings.

The Library contains an Encyclopedia, the most approved Dictionaries, both Classical and English, and other important books of reference for the use of the School, together with selected works for the direct professional reading of the teachers.

Several educational and scientific periodicals are furnished to the School, and which at the end of each year will form additional volumes for the Library. Pelton's and Olney's, together with Mitchell's new series of outline maps, published by J. H. Mather & Co., of Hartford, Ct., and a fourteen-inch terrestrial globe, aid in the department of General Geography.

Mattison's series of sixteen astronomical maps; a fourteen-inch celestial globe; Vale's improved twenty-four-inch celestial globe and transparent sphere; a magic lantern, with sets of slides, containing thirty accurate telescopic and astronomical views; a reflecting telescope of five feet focal distance, with magnifying power of 700, and Chamberlin's best Tellurium, aid in the department of Astronomy.

Historical maps, charts, &c., an Isothermal chart, and set of large drawings to illustrate the anatomical structure, and the physiological functions of the system, will be procured.

The following apparatus has already been procured to aid in illustrating and demonstrating in the studies named:

MECHANICS.-Set of mechanical powers, arranged in a mahogany frame, comprising three levers, each sixteen inches long. Five sets of brass pulleys strung with cord and properly balanced. Brass weights from one to sixteen ounces. Screw and lever with nut. Screw as an inclined plane. Ship capstan. Wheel and axle. Wedge in two parts. Inclined plane, with carriage. Movable fulcrum and lever, for combining the power of screw and lever. Machine for illustrating the centrifugal and centripetal forces-thirteen experiiments.

PNEUMATICS.-Air Pump-frame made of rose-wood beautifully polishedbarrel twelve by four inches inside; large plate, stop-cock, and barometer in vacuo, and worked with a polished steel lever four feet in length, $85,00. Large swelled, open-top bell glass. Several plain bell glasses of smaller dimensions. Bell glass with brass cap to receive stop-cock. Connector, sliding rod, &c. Revolving jet in vacuo. Bursting squares and wire guard for same. Condensing chamber and condensing gauge. Artificial fountain, with exterior and interior jets. Sheet rubber bag in vacuo, illustrating the rarefaction of confined air by removing the pressure of the external. Mercury tunnel to exhibit the mercurial shower, porosity of wood, pressure of the air, and also the luminous shower. Guinea and feather tube. Philosophical water hammer.

Apparatus illustrating the absurdity of suction, or the necessity of atmospheric pressure to the operation of the lifting pump. Torricellian barometer improved. Bell in vacuo. Apparatus illustrating the buoyancy of air, gas, &c. Weighing air and specific gravity apparatus. Freezing apparatus with thermometer. Condensing syringe. Cylindrical open-top bell glasses, three sizes. Hand and bladder glass, to illustrate atmospheric pressure. Bladder cap, with cap and stop-cock. Double acting exhauster and condenser. Brass hemispherical caps with handles, stop-cock and stand. Apparatus to illustrate the upward pressure of the atmosphere. Connecting screws, guard screws, sliding rod, with packing screws and binding screws. Flexible hose and screw connectors. Hydrogen bottle. Lead hose for conducting gases. Floating bulbs for condensation. Sheet rubber and sheet rubber bags. Glass bells and stems for freezing apparatus. Pair magnetic swans. Detonating glass tubes. Wire gauze, to illustrate Davy's safety lamp.

HYDROSTATICS.-Hydrostatic bellows, with glass and brass tubes, glass tunnels, weights, &c. Pair of working models of the forcing and lifting pump. Graduated glass jars for cubic inches.

ELECTRICITY. Electrical machine, 24 inch plate, $50,00. Leyden jar of four quarts. Do. do. for suspension with movable rings and points. Do. do. with sliding discharger. Electrometer jar, by which the charge may be measured, &c. Electric batteries with six four-quart jars. Sliding, directing rod. Spiral spotted tube. Jointed discharger, glass handle. Universal discharger. Insulating stand. Electric bells. Wax cylinder. Thunder house with fixtures. Gas pistol. Gas generator and platina igniter, four quarts. Long haired man. Electric float wheel and point. Abbe Noloes' globe. Luminous bell glass. Electric S. Aurora flask. Electric seasons machine. Elastic rubber ball. Ether spoon. Chamberlin's cylindrical gasometers, for oxygen and hydrogen, united, forming a compound blow pipe, $60,00. Iron retort for oxygen gas. Metallic reflectors with stand, iron ball and stands and a thermometer. Glass spirit lamp, Spirit boiler to use with reflectors. Dropping tube. Glass tunnels. Graduated glass hydrometer. Flask with screw-cap admitting thermometer. Platina and copper pendant spoons. Brass pipe for blowing gas bubbles. Hydrogen gas generator, with platina sponge for lighting a long detonating jet. Lamp stand. Flexible hose for transferring and conducting gases. Scales and weights for chemical purposes. Pyrometer with two lamps and rods. Section model of the high pressure engine.

GALVANIC MAGNETIC AND ELECTRO MAGNETIC.-Davis's cylindric battery. Steel U magnet and armature. Magnetic needles and stands. Electro magnet. Electro coil and hemispheric magnets. Terrestrial helix. Primary coil and handles for shocks. Separable helics for analysis of shocks.

OPTICS.-Models of the human eye in three parts. Fig. 1st. A dissectible eye four inches in diameter, showing the cornea, iris, ciliary process, choroid tunic, crystalline lens, vitreous humor, retina, black pigment, optic nerve, &c. Fig. 2d. Showing the eye in its socket, with the muscles. Fig. 3d. The eye with rays of light passing from an object and forming the image on the retina. The object and the image movable, showing the cause of lens light, short sight, and perfect sight.

An oxy-hydrogen microscope will soon be added in this department.

With the above apparatus more than eight hundred experiments can be performed.

For the purpose of teaching practical surveying, and the elements of engineering, a Theodolite, of approved English manufacture, is provided. Cost $200.

Other apparatus will from time to time be added, as the wants of the School may require.

Building Committee.-A. M. COLLINS, D. F. ROBINSON, T. BELKNAP, J. M BUNCE, W. PEASE, Jr., Edward Button, E. D. Tiffany.