Rural School Leaflet. 



653 



twigs or shoots on the branch. Any seedHngs standing thick in a pot or 

 box soon develop differences ; or ditterences may be apparent from the 

 first. No difference between plants is too minute to be overlooked, not 

 even to the notching of the edges of the leaves. Nothing in nature is so 

 small or trivial as to be disregarded. 



LESSON IL 



Figs. 3 



and 4. 



THE CONSTITUENTS OF MILK. 

 By Raymond A. Pearson. 



Object of lesson. — To accjuaint the pupil with some of the contents of 

 milk; to give 

 funda mental 

 preparation for a 

 series of lessons 

 on milk ; to lead 

 the pupils to real- 

 ize the import- 

 ance of this sub- 

 ject for study. 



il/ a tc rials. — 

 Thermometer , 

 bottle, saucer, 

 pan, a few drops 

 of vinegar, and 

 one quart o f 

 fresh milk. 



Alilk consists 

 of about seven- 

 eighths water and 

 one-eighth s u b- 

 stances which are 

 in solution in the 

 water or floating 

 in it in very small 

 particles. This 

 may seem to l:»e a 

 large proportion 

 of water anrl a 

 small proportion 

 of valuable con- 

 stituents, but 

 many fruits and 

 vegetables have even more water, and some of our favored meats have 



Fig. 2. — Even these stalks of golden-rod, all coming from 

 the same root, are different one from the other. 



