3 oo THE IMPROVEMENT OF RIVERS. 



being wetted and tamped well behind as the wall is built up. The bottom shall be art 

 invert, also of brick. Toward the top the brick shall be carefully arched and finished 

 with 20" cast-iron ring and cover of approved pattern. A brick filter having inside 

 dimensions of 8"X8" shall be built from the floor to a point 2 feet l>elow the ring. The 

 entire inner surface of the cistern, including the Ixittom, shall be well and neatly plas- 

 tered with two coats of cement mortar, mixed one part of cement and two parts of 

 sand. The contractor shall furnish and set above the cistern, with all its fittings 



and pipe, as required by the Engineer, a pump equal in all respects to , 



with brass cylinder, and connect the cistern with the downspouts of the house by six- 

 inch vitrified tile. 



8. Fireplaces. There will be fireplaces in the house, as shown on plans; 



of these shall have hearths made of concrete, covered with a J" layer of 



cement mortar as directed by the Engineer, 21 inches wide and 54 inches long, 

 and shall have their facing of plastering; the other two shall have facings and hearths 

 of enameled tile. . The hearths will be 2i"X54" set in a proper and workmanlike 

 manner. All fireplaces shall be furnished with 20-inch grates, with cast enameled 

 fronts, ash pans, and fenders of approved design. The grates shall be well set in fire 

 brick with fire clay for mortar, and the back walls shall be sloped or made concave as 

 directed. 



9. Mantels. The mantels shall be quartered oak. Three of them shall have 54" 



shelf and be 47" high, and be without tops and equal in all respects to Nos 



of catalogue. Two of them shall have lops and shall be in all respect equal 



to Nos of same catalogue, with French bevel mirror, and accompanying 



fittings as therein shown. 



10. Framing. All framing stuff is to be of sound, well-sawed pine or poplar, of sizes 

 shown generally by drawings exhibited, fitted and put together in a strong, workman- 

 like manner. 



11. Sills, etc. Sills, corner posts, and bracing shall be framed and connected as 

 shown or as directed by the Engineer. The sills shall be set on the walls in mortar. 



12. Joists. Joists shall be doubled and framed at chimney, stairs, and other 

 openings, and under partitions, all properly brought to level and well spiked. Cross 

 bridging shall be used in rows spaced not more than 6 feet apart. Spaces between 

 joists over sills shall be closed with 2 -inch plank and made mouse-tight. Joists shall 

 be generally 16 inches between centers. 



13. Studding, etc. Studding shall be generally 2" X 4", and set 16" between 

 centers, and shall be doubled on the sides of all openings, and shall extend in one length 

 from plate to sill. It shall be trebled at partition connections. Corners shall be of 

 single 6" X 6" stuff, in one length, properly braced to sills and plates. Plates shall be 

 of 2" X 4" stuff, doubled, well spiked, and breaking joints. 



14. Weather- boar ding. The houses shall be covered with first-class, well-seasoned 

 yellow poplar or yellow pine weather-boarding, sJ inches wide, 4j inches to weather, 



