CONTEXTS. 



Introdnctiou. By B. E. Feuxow 



Botanical diagnosis of the four principal pinus occmiug in the : 



Xoinenclatiire of Southern pines. 



Characteristics of the wood of Southern pines 



Mechanical properties 



Relation of strength to weight 



Weight relations '^^^ ^'^ 



Distriliution of weight and strength thro'ugliout the tree 15 



Effect of age 17 



Range of values for weight and strength 18 



Influence of locality '. 18 



Influence of moisture 19 



Weight and moisture 20 



Shrinkage 20 



Effect of "boxing," or "bleeding'" 21 



Use of the wood , 21 



Rate of gro w th 22 



Statistics and conclusions , 23 



The Longleaf Pino (Pinna pat uxtris Miller). By Ch.vri.ks .Mohu, Ph. D 27 



Introductory 29 



Historical 29 



Geographical distribution 30 



Characteristics of distribution in difl'erent regions 30 



Timber regions — supply and production 31 



The Atlantic pine region 3.1 



The maritime pine belt of the eastern Half region . 3(5 



The central pine belt of Alabama 41 



The forests of Longleaf Pine in north Alabama 11 



The region of Longleaf Pine west of the Mississippi 44 



Products If) 



Value and uses of the wood 46 



Resinous products of the Longleaf Pine 48 



Products obtaiued from the leaves of Longleaf Pine 48 



Nomenclature and classification 48 



Botanical description and morphology 48 



Root, stem, and branch system 49 



Leaves and their modificalioiis 49 



Floral organs 51 



Seeds 51 



The wood 53 



Growth and development 55 



Conditions of development / 60 



Demands upou soil and climate liO 



Associated species 61 



Enemies 61 



Exploitation 61 



Fires 62 



Live stock 62 



Storms 62 



Fungi 63 



Insects 1 63 



