REPORT OF NATIONAL MUSEUM, 1918. 75 



mercial methods of collecting the crude gum was displayed in the 

 wall case behind this. Cork bark and its products also occupied space 

 in the wall case. A large model of a timber preservation plant and 

 a smaller one showing wood preservation on the farm occupied two 

 adjacent floor cases, together with a collection of liquid chemicals for 

 preserving wood. Other floor cases contained the products of the 

 California redwood, diagrams and other devices showing forest re- 

 sources, and exhibits illustrating the various steps in the manufac- 

 ture of baseball bats, tennis rackets, bowling balls, duck pins, and 

 tenpins, golf drivers, saw handles, pitchfork handles, electric sad- 

 iron handles, cedar cigar boxes, and phonograph horns. The east 

 wall of the court was given over to the exhibit of Philippine woods, 

 while the commercial mahoganies and other foreign and native 

 woods were installed on the south wall. 



On 3 sides of the edge of the balcony surrounding the court is 

 hung a series of Argentine woods, while over the entrance to the court 

 is a large plank of California redwood. 



During the year the beautiful Paine " Korelock " door exhibit, be- 

 fore mentioned, was installed, arranged in the form of a booth in the 

 southwest corner of the court, all installation fixtures being furnished 

 by the donors. The huge pair of carved entrance doors form one side 

 of the booth, while the seven interior doors form the opposite side 

 and the back. The latter are placed on pedestals on a raised plat- 

 form, and are free to move in a complete circle in either direction, 

 showing both sides fully. Pilasters supporting the panel work and 

 mouldings complete the permanent installation. The polish given 

 to the standard aeroplane propeller is equal to that of the finest 

 piano, and, to prevent handling, the propeller and its attendant parts 

 were installed under glass, a special display fixture being made for 

 it in the Museum shop. 



It is realized that Museum material is only as good as the data with 

 which it is linked. Hence, effort is being made to have assembling 

 and cataloguing of material go hand in hand. On the whole, the 

 collections are in very good condition. 



The only material transmitted to investigators outside of the 

 Museum consists of one set of 22 mahoganies made up into 4-inch by 

 6-inch hand samples, sent as an exchange to Mr. Roger B. Maxwell 

 of the American Propeller & Manufacturing Co., Baltimore, Mary- 

 land, for use in a study of mahogany for aeroplane propellers. 



Mr. Joseph Donner, who was appointed assistant curator of medi- 

 cine on August 16, 1917, having been inducted into the Sanitary 

 Corps of the United States Army, was furloughed on January 31, 

 1918, and Mr. Charles TVhitebread appointed as his successor, taking 

 up the work of the division of medicine on April 2, 1918. The year 

 was an active one in this division, and a number of important ac- 



