MANUAL OF NATURE) STUDY. 
157 
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Learn the points or marks by which any mem¬ 
ber of the Lily family is known. Examine the 
tulip, the trillium and dog-toothed violet. What 
are the points in common? Let pupils collect 
others of the same family. Is the calla a lily? 
The Indian turnip ? Examine them in comparison 
with each other and in contrast with the lily. 
If these families are well worked out the pupils 
will be fairly well equipped for the future study 
of flowers. 
B .— Physiology. 
1. Study somewhat in detail, foods, hunger, 
thirst, cooking, fatigue, etc. 
2. Study the special senses, seeing, hearing, 
etc. See third grade work for discussion of these 
two topics. 
Note. —Use charts to give correct ideas of the 
organs of the special senses. Make strong the 
hygienic teaching * in connection with the vari¬ 
ous senses and topics considered. 
