760 



AMERICAN FORESTRY 



DISTINGUISHING CHARACTERIS- 

 TICS OF MAHOGANY 



Only true mahogany from tropical 

 America, "African mahogany," and "Phil- 

 ippine mahogany" are commonly sold as 

 mahogany in this country, but at various 

 times over 60 diflferent species of timber 

 have been sold under that name, says the 

 Forest Products Laboratory. Although all of 

 these species resemble each other in vary- 

 ing degrees, tropical American mahogany 

 and "African mahogany" possess one im- 

 portant characteristic 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. This 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 examination, 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 mahog- 

 any. Among them are crabwood and sap- 

 eli, species imported from South America 

 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, con- 

 centric lines on the cross section usually 

 from % to yi 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 dis- 

 tinguished from true mahogany and other 

 so-called mahoganies by the presence of 

 fine white, tangential lines % inch to sev- 

 eral inches apart, readily visible to the 

 naked eye, and showing under a lens as 

 rows of small openings filled with a white 

 substance. 



A more complete key and description of 

 mahogany and so-called mahogany, which 

 describes common species in detail, may 

 be obtained from the Forest Products Lab- 

 oratory. 



LUMBER FOR THE MINES 



The annual underground consumption 

 of timber by the mining industry of the 

 United States amounts to 293,365,000 cubic 

 feet, according to an estimate just made by 

 the Bureau of Mines. Of this amount, 151,- 

 140,000 cubic feet are used in the bitumin- 

 ous coal industry ; 61,600,000 in the an- 

 thracite mines ; 31,500,000 in iron ore mines, 

 and 49,125,000 in mines producing other 

 ores. The increase in the annual timber 

 consumption in mines since 1905 amounts 

 to nearly 46 per cent. 



A serious problem now confronting the 

 mine operator in the important coal and 

 metal mining regions in both the East 

 and West is the noticeable decrease in the 

 supply and quality of the timber in many 

 mining regions, coupled with marked in- 

 rvease in ct ct. 



LONGLEAF PINE A PROFITABLE 

 CROP 



That there are millions of acres in the 

 Southern States that will "become valuable 

 to the owner and the State only by the 

 growing of pine timl)er is the statement 

 made in a publication just issued by the 

 United States Department of Agriculture, 

 dealing with profits that may be obtained 

 from second growth longleaf pine. 



The protection and reforestation of these 

 lands, it is pointed out, mean permanent 

 industries, permanent homes, good roads, 

 and good schools. Destructive lumbering 

 and destructive fires are every year creat- 

 ing in the southern pine region millions of 

 acres of waste and barren lands. In these 

 idle timber lands is an enormous potential 

 wealth and their productive power is not 

 fully realized. 



The bulletin explains how these idle, 

 slacker acres can again be made productive, 

 contributing their share toward the wealth 

 of the community and to the pocketbook 

 of their owner. It presents full informa- 

 tion on the growth and value of longleaf 

 pine, methods of producing timber and 

 turpentine, and outlines the cutting and 

 protection systems best adapted to this 

 species. 



Copies of the publication, which is the 

 work of Wilbur R. Mattoon of the Forest 

 Service, may be had free by applying to 

 the Department of Agriculture, Washing- 

 ton, D. C, for Department Bulletin io6i, 

 entitled "Longleaf Pine." 



We offer, subject to prior sale and subject to advance in price without notice, the unsold portion of 



$500,000 



Seven Per Cent (7%) Cumulative Preferred Stock 



of the 



PAN-AMERICAN LUMBER & MFG. CO. 



Par Value $100 per Share 

 together with the bonus rights of Common Stock 



PRICE lOO 



Send for Detailed Circular B-105. 



Pan-American Lumber & Manufacturing Company 



EXECUTIVE OFFICES 



347 FIFTH AVENUE 

 NEW YORK, N. Y. 

 The Company will resell its securities for stockholders at any time at par, less a nominal charge of 2%. 



