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five assistants, for the whole building; or, one master and two assistants, for each floor. The communicating doors between the main rooms, and the glass partitions between the main and class-rooms, admirably favor this arrangement. While two of the Teachers on each floor are conducting recitations in the class rooms, the third can preserve order and promote the studies in the two main rooms, which will be, at the same time, fully in view of the Teachers in the class-rooms.

In schools of this rank the largest provision of black-board should be made. Five feet in height, of the partitions between all the class-rooms, commencing two feet from the floor, and the whole length of the partitions, should be devoted to this purpose. The wall or partition at the back of the book closets, and that opposite the stairs, in each main room, as shown on the ground plans of both stories, should also have the same height of black board surface.

In Schools of this kind there is little use or need for a Teacher's platform and desk, except at time of opening and closing the exercises. One Teacher will necessarily be in charge of two of the main rooms, if there be a Teacher with a class in each recitation room at the same time, and while thus engaged will have no time to sit. A small platform, near the communicating door between the main rooms, will thus probably be found sufficient, and most suitably placed. This slight change will not only save space, but turn the eyes of the pupils from the light.

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The other letters represent the same parts, as in the first story.

For the accommodation of greater numbers, the remaining plans in this class have all two flights of stairs.

SPECIFICATION.

These engravings represent the plan of a building measuring thirty-seven feet on the front, and forty-seven deep, with projecting wings of twelve by twenty-three feet on each side; the first story is fourteen feet, and second thirteen, each in the clear; twelve feet pitch of roof; elevation of first floor two feet. In this specification reference may be made to all similar work in the following plan in this class.

The material in this building may be stone or brick; and for the arrangements of the interior, reference is made to the plans and explanations of the same.

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PLAN NO. 3.-FRONT PROSPECTIVE WITH GROUNDS &C.-FIG. I.

This plan is designed for sixty-four pupils. By placing seats opposite the flues, if required, it will contain that number of pupils, and will answer for a small village or thinly settled rural vicinity. The platform and black-board should be extended to the book closets, on each side of the Teacher's desk, in the places of the two seats for four

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pupils each. This building will be found convenient and ornamental when properly surrounded with trees, shrubbery, &c.

The size of this building is thirty by forty feet on the outside, story thirteen feet high in the clear, and pitch of roof nine feet.

SPECIFICATION.

The materials of the walls should be brick, and the cellar walls built up above the level of the ground, eighteen inches thick, with cellar door-way, and window openings secured with iron guards. A cut stone door sill will be required for the front door, twelve inches on the top face and eight inches rise. The walls from the surface of the ground upwards will be of brick; the outside four inches, to be the best quality dark stretchers with the joints smoothly struck; the thickness of the wall at the base and pilasters will be sixteen inches; in the recesses twelve inches, being a nine inch wall spread on the base, making an opening of three inches in the centre of the wall; the two surfaces to be bonded together, with alternate headers every fifth course; the projection of the base to be finished on the top with headers. The flues will be made eight by twenty-four inches, thoroughly and smoothly pargeted and topped out on the roof for ventilators. The work to be done in a substantial and workmanlike manner, with mortar composed of clean, sharp sand and wood burnt lime. Plastering on the interior will be done in the same manner as the last; the jambs of the windows will be plastered and the angles rounded.

CARPENTER WORK AND MATERIALS.

The flooring joists will be eight by fourteen inches, and ceiling joists two by twelve, placed sixteen inches between centres, and the flooring joists strengthened with two lines of lattice bridging, well secured to the same; a raising piece will be spiked on the ceiling joists, and the rafters heeled against it; alternately the rafters will be continued over the wall, forming cantilevers to support the eaves; those from the gables will be framed into the outer rafter. The rafters will be framed and one and a half inch plank collar beams well spiked across the same. The rafters will be lathed and covered with the best white pine shingles, butted and jointed. A bell turret will be built according to the plan. The window frames will be made plank front or casing, and double hung. The sash and shutters to be made and hung as usual on the flank and back of the building; but on the front, inside shutters in one pair to each window, will be made and hung to open against the wall, and recesses in wall will be made to receive them; the sub-sills of the windows will be made of heart pine. A circular transom sash will be made over the front door. The doors will be made and secured as usual, excepting that in the partition between the lobby and clothes rooms, folding doors will be made and hung, so that they may be opened into one room for recitation or class purposes. The closets will be shelved in the usual manner, and the platform for the Teacher's desk made with [eight inch rise. Wainscoting, black-board, inside dressings and jambs of doors, pinrails and hooks in recitation rooms, slats in main room for maps, cellar door and steps, and outside steps (of wood) and privy and fencing, will be done in the best manner.

PAINTING AND GLAZING.

The wood work usually painted, will receive three coats in plain colors, with pure white lead and linseed oil. The sash all to be glazed with the best glass; the size of the glass will be thirteen by sixteen inches, eighteen lights in each frame on the side and back; the front frames to have twelve lights in each.

All the materials and workmanship to be of the best quality, and every thing to be furnished, requisite to complete the building in all its parts, in a substantial and work manlike manner, and to the satisfaction of the Trustees.

ESTIMATE.

A building according to this plan, would cost nine hundred and fifty dollars without the cellar; or eleven hundred dollars with a cellar complete, as in the specification.

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This plan is designed for forty-six pupils, but can be arranged for thirty-eight or fifty. It may be of stone or brick.

The artist has provided a separate entrance for boys and girls though they are to sit together in the same room.

The size is twenty-three by thirty-four feet, and pitch of roof eleven feet; the story twelve feet in height in the clear, with a side porch; the walls of undressed stone or brick.

The cellar will be excavated under the building, with entrance, &c., and foundation trenches for the porch two feet below the surface of the ground. In regard to the details of the mason and carpenter's work, they can be determined upon by the Trus tees, and inserted in the specifications. The specifications of the preceding plan will bea guide in this respect. The details of seating and warming will be given at the end.

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PLAN NO. 5.-PERSPECTIVE AND GROUNDS OF AN OCTAGONAL SCHOOL-HOUSE-FIG, L.

The above is a plan of a very beautiful rustic school-house and grounds. This design for a school-house intends to exhibit a model of fitness and close economy. The principles of fitness are, 1. Ample dimensions, with very nearly the least possible length

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