MONTEREY PINE. 83 



few escape that reproduction is scanty in most localities, and that 

 fact will have its influence upon the future supply of this species. 



PARRY PINON (Pinus quadrifolia). 



PHYSICAL PROPERTIES. 



Dry weight of ivood. 35.4 pounds per cubic foot (Sargent). 



Specific gravity. 0.57 (Sargent). 



Ash. 0.54 per cent of weight of dry wood (Sargent). 



Fuel value. 76 per cent that of white oak (Sargent). 



Breaking strength (modulus of rupture), 6,400 pounds per square inch, or 

 40 per cent that of longleaf pine (Sargent). 



Factor of stiffness (modulus of elasticity). 565,000 pounds per square inch, 

 or 27 per cent that of longleaf (Sargent). 



Character and qualities. Wood moderately heavy, soft, compact; annual 

 rings very narrow ; sumnierwood thin, not conspicuous ; resin passages very 

 numerous, large, conspicuous; medullary rays numerous, obscure; color light 

 brown or yellow, the sapwood much lighter. 



Grow th. Height, 15 to 30 feet ; diameter, 10 to 16 inches. 



SUPPLY AND USES. 



The Parry pinon's range is confined to the extreme south of Cali- 

 fornia and to Lower California, but it is more abundant south than 

 north of the international boundary. It is too small a tree to figure 

 largely in lumber production, even if it were plentiful. It is cut for 

 fuel, and a little is employed about ranches for fencing, posts, and for 

 repair of farm implements. The Indians of the region, and occa- 

 sionally the Americans, make use of the large nuts for food. The 

 seeds are wingless and seldom get themselves planted far from the 

 parent tree. It is not probable that this pine will ever become more 

 important than it is now. 



MONTEREY PINE (Pinus radiata). 

 PHYSICAL PROPERTIES. 



Dry weight of wood. 28.5 pounds per cubic foot (Sargent). 



Specific gravity. 0.46 (Sargent). 



Ash. 0.3 per cent weight of dry wood (Sargent). 



Fuel value. 61 per cent that of white oak (Sargent). 



Breaking strength (modulus of rupture). 10,000 pounds per square inch, or 

 62 per cent that of longleaf pine (Sargent). 



Factor of siffness (modulus of elasicity). 1,415,000 pounds per square inch, 

 or 67 per cent that of longleaf pine (Sargent). 



Character and qualities. Wood light, soft, strong, and rather tough ; annual 

 rings very wide; summerwood not broad, resinous, conspicuous; color, light 

 brown, the very thick sapwood nearly white. 



Growth. Height, 70 to 90 feet ; diameter, 18 to 30 inches. 



SUPPLY AND USES. 



The Monterey pine's range is restricted to the California coast, 

 south of San Francisco, and to the islands adjacent. It will grow in 

 pure stands, but it does not live long in arid situations, nor does it 

 thrive in wet soils. It can, however, grow in the shade, and it is not 



