70 NATURE-STUDY REVIEW [14:2— Feb., 1918 



b. Tree surgery and dentistry. A very practical collection of 

 specimens may be obtained for this work by sawing off dead stubs, 

 unpainted wounds which have started to decay, wounds which 

 have partially healed, and those that have healed entirely. Pic- 

 tures of these specimens and the method of teaching may be found 

 in the Rhode Island Arbor Day Booklet for 191 7. 



c. Blocks of wood. Pine and oak blocks cut and polished to 

 show the annual rings, silver grain, etc., give a good basis for 

 understanding wood structure. 



d. Evergreens. Obtain a pane of clear window glass of the size 

 desired and a piece of stout cardboard of the same dimensions. 

 On the cardboard place a thin layer of cotton batting. Arrange 

 the evergreens on the cotton in a definite order and place calendar 

 numbers beside them. Place the pane of glass over them and hold 

 the various parts in place by fastening them in a picture frame or 

 by passe-partout binding. This will always be ready for use. 



e. A blank for tree observations may be obtained from the 

 Bureau of Plant Industry by sending for form 219. 



f . The following is a key for the trees in winter. Similar 

 ones may be worked out for birds, flowers, insects, etc. Pupils are 

 not expected to learn the differences for examination but this form 

 is a convenient way for teachers to identify specimens brought in. 

 The natural way to learn any new vocabulary is through use and 

 should the teacher develop an interest in trees in her students she 

 will eventually find that she is acquiring a large fund of information 

 for herself. In a. list of this kind it is taken for granted that the 

 teacher knows a maple tree, etc., but is not sure of the species. 



Rhode Island Normal School 



Winter Tree List 



Locality Class 



Date Total 



Yew Family 



*Ginkgo: not evergreen; spurs; leaf scars far apart. 

 Pine Family 



White Pine: 5 leaves in a bundle; cone scales thin. 



Pitch Pine : 3 leaves in a bundle ; scales thick, spine. 

 *Red Pine : 2 leaves in a bundle, slender, flexible. 



