107 



finds the least resistance in the water and forces it up and 

 out of the tube. 



3. Pumps. 



(a) Lifting pumps. 



(b) Force pumps. 



Glass models of pumps can be procured at small cost from 

 any supply company, or can be easily constructed by the 

 use of some argand lamp chimneys, corks, wire, and 

 leather valves. The principle of the lifting and force 

 pump is simple, every child can understand it. By ob- 

 serving the experiments on pressure, compressibility and 

 elasticity of air, they will be able to construct pumps and 

 understand their workings. The application is made in 

 wind mills, spraying apparatus, etc. 



4. Water Works. 



(a) Drinking. 



(b) Cooking. 



(c) Laundry. 



(d) Sanitary purposes of home. 



(e) Lawns. 



(f) Plants and animals. 



(g) Cleaning streets. 



(h) Sanitary purposes of city. 

 (i) Fire protection. 



5. Plumbing. 



(a) Sanitary plumbing. 



(b) Dangers of imperfect plumbing. 



(c) Diseases incident to imperfect plumbing. 



FURNISHING. 



1. Rugs. 



(a) Kind. - & 



(b) Quality. 



(c) Coloring. 



(d) Manufacture, 



2. Furniture. 



(a) Polished wood. 



(b) Brass or iron beds. 



(c) Stuffed furniture not hygienic. 



(d) Drapery. 



Light to admit sun. 

 Material that can be laundried. 



