74 REPOKT OF NATIONAL MUSEUM, 1918. 



being true mahogany and the outer ones black cherry. Its use is to 

 furnish power for the generation of electric energy. 



The Museum is indebted to A. G. Spalding & Bros., of Chicago, 

 Illinois, for additional cooperation by the gift of a series of 10 

 specimens showing steps in the manufacture of a white ash baseball 

 bat, and five finished bats of various qualities. Crane & MacMahon 

 (Inc.), New York City, sent a series of eight specimens showing the 

 public how a hickory wagon wheel is built, from hub to felloe band. 

 In order to contrast the method of assembling the parts of an auto- 

 mobile wheel from felloe to hub — the reverse of that used in turning 

 out a wagon wheel — Hoopes, Bro. & Darlington (Inc.), of West 

 Chester, Pennsylvania, furnished 10 automobile wheel parts, three 

 partially assembled wheels, and a finished wheel with hub inserted, 

 all made of hickory. 



The California Redwood Association, of San Francisco, California, 

 made a most attractive addition to their already large display by 

 sending 14 redwood boards, a newel post, 3 balusters, 2 table legs, and 



5 photographs of redwood trees. The boards show various finishes 

 applied to the tangential surfaces of figured redwood. The newel 

 post, table legs, and balusters were left unfinished to show the natural 

 grain of the wood. 



The method of manufacture of apple and beech saw handles is 

 shown in six stages by three sets of handles from Henry Disston 



6 Sons (Inc.), Philadelphia, Pennsylvania. 



Three wooden plane blocks, illustrating one of the uses of native 

 hard woods, comprise the only Colombian species in the collection. 

 These planes were made at El Bana. Colombia, and were presented 

 to the Museum by Mr. H. M. Curran, of Laurel, Maryland. 



The Brunswick-Balke-Collender Co., of Chicago, Illinois, added to 

 their sporting goods display by sending a fancy wood billiard cue, 

 in the rough, showing the process of manufacture, together with 

 specimens of the eight woods used in inlaying the above style of cue. 



The Armstrong Cork Co., of Pittsburgh, Pennsylvania, sent a 

 large colored transparency of a cork oak tree to supplement the 

 series of cork products presented last year, and the Clyde Iron 

 Works, of Duluth, Minnesota, 13 photographs portraying steam log 

 loaders, cableway, and outhaul log skidders, and various other 

 phases of modern steam logging operations. 



On February 2, 1918, the exhibit of wood technology, filling the 

 southeast court of the arts and industries building, was opened to the 

 public. The large National Forest model, thoroughly cleaned and 

 retouched to bring out its brightness and inclosed in glass, formed 

 the centerpiece. Another large floor case contained the model show- 

 ing turpentine orcharding and the manufacture of gum spirits in 

 the Southern Yellow Pine Kegion, and material illustrating com- 



