ILLUSTRATIONS 



PAGE 



Utilization — The Field of the Forest Products La])oratory 



Begins Here Frontispiece 



Three Foresters, United States Forest Service .... 3 



The Yard to ANHiicli Come T.,ogs from Many Climes and Coun- 

 tries 8 



Organization Chart, Forest Products I.,aboratorv . . .14 



Erection of the Million Pound Timber Testing ^lachine (1920) . 17 



Three Directors, Forest Products Laboratory . . . .20 



The Timber ^Mechanics Laboratory ...... 24 



Box Testing in tlie liig Tum])ling Drum . . . . .27 



A Cliarge of Ties Knteringtlie Preservation Cylinder at tlie lial)- 



oratory .......... 30 



War AVork — .An Airplane AVing Rib Being Placed in a Testing 



Machine 36 



Personnel Development Chart — July, 1917 to July, 1920 . . 39 



Laminated Construction as Applied to Wooden Articles of Com- 

 merce 44 



Glue Spreach'ng ^Macliine ........ 46 



Some AVar Time Installations of Types of Dry Kilns Developed 



at the La))oratory 50 



Wood DistiHation Retort 56 



Studying the JNIany Factors Entering into the Manufacture and 



Storage of Airplane Propellers 62 



Forest Service Improvements in Turpentining . . . .68 



Wood Technology— The JNIicroscope is Useful in Identification . 72 



