132 The Ottawa Naturalist. [Jan. 



parts of the trees not yet taken, and of uses and abuses of each 

 tree and its products. Tentative labels had previously been 

 prepared at my request by the late Mr. Abraham Knechtel, 

 Chief Forester of the Parks Branch of the Department of the 

 Interior. These refer particularly to the Park, and conse- 

 quently are to be revised, so as to serve as labels to the same 

 trees in any other museums that may accept the labels. Sup- 

 plementary labels describing the peculiarities of the same trees 

 as to the Park are also in preparation. These labels were printed 

 in the Handbook of the Rocky Mountains Park Museum, and 

 from the same type the labels were printed for labelling the 

 specimens in the museum. The museum labels were printed 

 on card of a yellow colour to harmonize with the furniture of 

 the museum, and with a brown ink for the same purpose. They 

 were framed and securely screwed to the trunks of the speci- 

 mens, so that they cannot easily be displaced. The glass cover- 

 ing them, which can be cleaned readily by any janitor, pro- 

 tects the label from dirt or breakage. When these labels are 

 revised to include instruction and explanation of the most im- 

 portant of the forestry abtises and needs, and when specimens 

 of uses of the lumber and other tree products, such as wood 

 alcohol, charcoal and turpentine, are added with full labels, 

 this exhibit will be the beginning of a suggestion for a museum 

 aid to forestry. An example of such a fact as should go iii a 

 label is that the obnoxious pitch of the balsam is so largely in 

 the bark that the wood, formerly not used at all for paper pulp, 

 is exceptionally valuable for this purpose. The qualities of a 

 great number of woods may be sho.vn by the exhibition of the 

 volumes of American Woods published by Hough, illustrated 

 by cross radial and longitudinal s'^ctions of actual trees. But 

 certainly to accomplish the best results expert foresters who 

 know the scientific facts must co-operate with those who un- 

 derstand people well enough to translate forestry facts into 

 terms that not only can be understood by those whom forestry 

 seeks to convert to its aid, but into terms that will also attract 

 those people to read the labels and study the specimens. 



The same labels may serve as outlines for lectures, each 

 label being illustrated by lantern slides made from the photo- 

 graphic negatives previously mentioned. It is part of the 

 work of all progressive museums to give popular lecture inter- 

 pretations of science, as well as scientific lectures and recreation 

 based on instruction. Then, too, the museum may send out 

 both travelling exhibits of forestry and lecture outlines made 

 up of the labels together with loan sets of lantern slides. 



The President of the Ohio Academy of Science, spsaking 

 at the 2 5th anniversary of the Academy, stated that the exist- 



