620 



in the drawing and table. 'A good pro- 

 tractor can be purchased very reasonably. 

 Cut out the pieces as shown on the right 

 edge of the chart. 



To use this chart, lay it flat on the 



Popular Science Monthly 



An Inexpensive Cesspool Made of a 

 Barrel and Cask 



1+ 13 ia 



A miter chart to keep at hand for designat- 

 ing the miter line of the bottom end section 



paper and make a dot at the point where 

 the lines meet. Draw a pencil line along 

 the bottom and along the short line on 

 the right edge that is marked for the num- 

 ber of pieces wanted. Remove the chart 

 and connect the dot and the short line. 

 This line will be the miter required. At 

 the bottom, draw a circle the diameter of 

 the pipe wanted and project the lines 

 upward and over to the right to develop 

 the pattern as described in previous issues. 

 For greater clearness we will give the 

 table form, the numbered degrees for the 

 miter lines for the indicated number of 

 pieces as shown on the chart. 



Miter Lines for Ninety Degree Elbows 



For a Two-Piece Elbow 45 Degrees 



For a Three-Piece Elbow 22^ 



For a Four- Piece Elbow 15 



For a Five- Piece Elbow ii^£ 



For a Six-Piece Elbow 9 



For a Seven-Piece Elbow. ...+... 7^ 



For an Eight-Piece Elbow 6 ^7 



For a Nine-Piece Elbow 5% 



For a Ten-Piece Elbow 5 



A SERVICEABLE cement cesspool can 

 be constructed in the following manner 

 at a cost of about three 

 dollars. The essentials are 

 a large crockery cask that 

 stands about 4 ft. high, 

 half of a lime cask, three or 

 four bags of cement and 

 plenty of clean sand and 

 loose stone. Dig a hole 

 about 8 ft. deep and 18 in. 

 larger in diameter than the 

 extreme diameter of the 

 crockery cask. Fill this 

 hole with about 3 ft. of 

 stones or bricks packed 

 loosely to allow easy drainage. Knock out 

 the head of the crockery cask and turn it 

 bottom up, with the open end over the 

 stones. Place it so the distance between the 

 cask and the walls of the hole will be about 

 the same on all sides. This will bring the 

 turned up bottom of the cask about a foot 

 below the surface of the ground. Cut a 

 round hole in the side to admit the drain- 

 pipe and set it in place, letting the end 

 project about 6 in. inside. 



Cement 



Ingredients That Make the Best 

 Kind of Glue 



THERE are two kinds of constituents 

 in glue — glutin and chondrin — the 

 one or the other in large quantities accord- 

 ing to the raw stock used. Skins will 

 produce more glutin and bones yield a 

 larger amount of chondrin. As a cement, 

 the glutin has the greater binding power 

 and naturally is the more valuable. 



A crockery barrel with an inclosed cask 

 set in the earth to serve as a cesspool 



Mix your cement in the proportion of 1 

 part of cement, 4 parts of sand and 4 parts 

 of stone, bricks or clean clinkers. Fill in 

 around the sides with this mixture and 

 tamp well in place to remove all air 

 pockets. Knock out the head from the 



