46 



Hardwood Record — ^Veneer & Panel Section 



June 10, 1922 



PERKINS 



183 



Trade Mark 

 Rm. U. S. Pat. Off. 



PERKINS 



183 



Trade Mark 

 Beg. U. S. Pat. Off. 



GENERAL OFFICES AND FACTORY 



Users of 



Perkins Vegetable Glue 



ARE FULLY AND PERMANENTLY PROTECTED 



Patents covering Perkins Glue have been held valid and infringed by the United States 

 Circuit Court of Appeals. Patents have also been granted in Canada, Great Britain, Ger- 

 many, France, Belgium. Italy and other foreign countries. 



PERKINS GLUE COMPANY 



Factory and General Offices: LANSDALE. PA. Sales Office: SOUTH BEND, IND. 



Hoffman Brothers Company 



ESTABLISHED 1867 



INCORPORATED 1904 



VENEERS 

 HARDWOOD LUMBER 



800 W. Main St., FORT WAYNE, I^fD. 



^Unts: Fort Wayne, Ind. Kendall ville. Ind. Bumside, Ky. 



Distinguishing Characteristics of Mahogany 



Only true mahogany from tropical America, "African rnahog- 

 any," and "Philippine mahogany" are commonly sold as mahogany 

 in this country, but at various times over 60 different species of 

 timber have been sold under that name. Although all of these 

 species resemble each other in varying degrees, tropical American 

 mahogany and "African mahogany" possess one important char- 

 acteristic in common. This is the occurrence of dark amber-colored 

 gum in many of the pores. The gum does not fill the pores but is 

 recognized as dark specks or streaks in the pores as seen on end 

 or side grain. T~his gum is barely visible to the naked eye, but 

 is easily seen through a hand lens with a magnification of 10-15 

 diameters. In preparing the end grain of the wood for examina- 

 tion, a very sharp knife should be used to make a smooth cut. 



Some other woods have similar dark masses of gum in the pores. 



but none of these are commonly substituted for mahogany. Among 

 them are crabwood and sapeli. species imported from South Amer- 

 ica in small quantities only, and the Cedrelas (Spanish cedar, etc.), 

 which are rarely sold as mahoganies, and are easily recognized by 

 their odor. 



True mahogany has fine, continuous, concentric lines on the 

 cross section usually from \^ to Yl inch apart, which distinguish 

 it from "African mahogany" in which these lines never occur. 



"Philippine mahogany," although not marked by the black 

 masses of gum, is distinguished from true mahogany and other so- 

 called mahoganies by the presence of fine, white, tangential lines 

 j/g inch to several inches apart, readily visible to the naked eye, 

 and showing under a lens as rows of small openings filled with 

 white substance. 



A more complete key and description of mahogany and so-called 

 mahogany, which describes common species in detail, may be ob- 

 tained from the Forest Products Laboratory Technical Note No. 



162, Forest Products Laboratory, Madison, Wis. 



The Jasper Furniture Company at Evansville, Ind., has let the 

 contract to the Hoffman Construction Company at Evansville, 

 Ind., for the erection of their new factory building at a cost of 

 $47,000. Work on the new building will start at once and the 

 plant is expected to be completed some time during the present 

 year. 



The Kewaunee Mfg. Company of Kewaunee, Wis., has received 

 one of the largest contracts in its history, consisting of an order 

 for all special furniture, laboratory equipment and fixtures for 

 the new Bay View High School at Milwaukee. It does not include 

 the general seating and desks and other standard school furniture. 

 The Kewaunee company's bid was $77,685. 



