,,,i.,.TKK| CAKE OF THE TEETH 41 



until finally the butter had formed. We then took the lumps 

 from the jar, and washed it several times in a bowl of cold 

 water. It was then mixed carefully, in order to get all. the 

 water out of it. A child tasted it and found that it lacked salt» 

 so he proceeded to mix in a sufficient amount of salt. Now the 

 butter being ready, my children, as all others, were very anxious 

 to eat it. I had predicted this and so had arranged that crack- 

 ers be handy when the time came. We buttered our crackers 

 with our own home-made butter and had, as the children called 

 it, a very enjoyable party. 



Rose Klein 

 Chicago Normal School 



ORAL INSTRUCTION IN HYGIENE: HFTH GRADE 

 TOPIC-CARE OF THE TEETH 



By PROF. JOHN G. COULTER. Illinois State Normal University, Normal, III. 



Note -The editor has requested presentation of a "unit lesson" in 

 '•physiology" for some one of the grammar grades. The writer, though 

 desirous of doing what lie can in the interestof nature-study, is reluctant to- 

 attempt the thing re«iuested. For he doubts whether such a thing may be- 

 properly called nature study ; at least he has mental reservations on the 

 matter as not conforming to his particular idea of nature-study. However, 

 with this preparatory note, realizing that, whatever the editor has requested, 

 he has not requested a defense of the position that physiology or hygiene 

 in the grades is not nature-study, the writer proceeds to present something 

 which may do no harm, even though it may seem to have crept under the 

 wrong covers, if it is deserving of printed covers at all.— J. G. C. 



It certainly is a bother to brush our teeth. When we get 

 through dinner or supper there is nearly always something in- 

 teresting to hurry ofT and do, and what a a nuisance it is to go 

 up to the bathroom or to our bedroom and get out a tooth-brush 

 and some water and perhaps some sort of stuff to put on the 

 tooth-brush and then scrub our teeth! What's the use any- 

 how? Our mouth feels all right, and tooth-brushing doesn't 

 seem to do any good. Well, let's see if it does. 



Perhaps this is the way of it. Perhaps tooth-brushing 

 doesn't do any good, but perhaps "not" tooth-brushing does a 

 lot of harm. Whichever it is we want to find out, because it's 

 not going to be forty or fifty trips to the dentist, or false teeth 

 for us, when we grow up, if \vc can help it : not even if it takes. 



