Rural School Leaflet. 



705 



to the width and depth of the body, as well as to the length of the shoulder 

 and length of the neck. (Lesson \'L) Now we are to point out the rela- 

 tionship between the length, of the licad, the total length of the body and 

 the total height of the body. Take the length ^of the horse's body by 

 placing the stationary end of the bar, described above, against the point 

 of the elbow, then slide the square along the bar until it reaches the back 

 of the buttock. You will find the distance almost equal to two and one- 

 half times the length of the head. 



There are two points from which we measure the height : first, from 

 the highest point of the withers to the ground, and second, from the 

 highest point of the rump to the ground. If we take the height from the 

 highest point of the withers, by placing the stationary end of the bar on 

 the ground and sliding the square up the bar until it just reaches the 

 top of the withers, we shall find this distance almost equal to two and 

 one-half times the length of the head. If we take the height of the horse 

 from the highest point of the rump to the ground, this distance will also 

 be found to be almost two and one-half times the length of the horse's 

 head. Thus we can find three measurements equal to two and one-half 

 times that of the head : ( i ) the total length of the horse's body from the 

 point of the elbow to the buttock; (2) the height from the withers to the 

 ground; (3) the total height from the rump to the ground. 



Lesson XV. 



PLAXT-FOOD— Continued. 

 (See Lesson XIII.) 



Bv G. F. Warren. 



Object. — To see what effect 

 the addition of compounds of 

 nitrogen, phosphorous, and 

 potassium to the soil may have 

 on the growth of wheat plants. 



Materials. — X i t r a t e of 

 soda, muriate of potash, acid 

 phosphate, ten flower pots or 

 tin cans, wheat, soil, the soil 

 preferably from a field that is 

 not very fertile, taken from 

 the schoolyard or an adjoining 

 field if possible, and window 

 space for the pots. Any good- 

 sized boy in a rural school 

 ought to be able to secure soil 

 23 



Fic. 40. — A horse having good proportions. 



