CONTENTS 
Introduction— 
The Tree and Its Parts: Page. 
OT el a Ste ME ee 7 oe a a 1 
LS RS SIRE aI ATES el ne an he OO) i 
MRM aia” Gre tae tae olenn oe Me i 
Go ee ES TTT Ny RR Tine WA SS kee nD 10 
STEED EL CRIE sobs ae Js itn ns me PE a aks af 
PNM ne Pree wen et et et boo ak wale bogee w 14 
Peeeramion orl rees in. Texas... cs. ce bee oe ee ee ANS 
Influence of Trees on Climatic, Erosion and Run-off..... 16 
I COCR Tce psy Rae ka eal We otted a, eh ates 17 
6 LEST ofan Foal al IE Wi Sa gc eg ee 18 
mmm OMe RCE The IN GNr i lat cons Saas oncdeicestotg n'y s wwe cosa a eR 20 
Pewerorgne Hamilies and Genera. ..... 2.6. .e ee nee 25 
5 LP EERIE Spel AUS Sy Ae Sa ne Se no 33 
OL BESET IG PESOS oS DRE RCO ak oir ce ai 46 
NE! STL GICCB VEO Rn Sel ACISOR NCPR eine a 47 
oc ESTE CLR S(S I 0a el a i Se I CO re ee ag Oa 53 
Ae ACO nar ee We ee 8S Ny ace ste, | 54 
(TGCS 0 ace RRR iS Na NA AN ee a 54 
(EES Gk oT as TRIG a SEE DP ans bec ee na 59 
EEE 8 fel FONG Soe PS ghochal oa ech os 60 
CE La D808 oo une DRE AES a pi ee 1 61 
TE OG ETE ge Die Ie TAs See a Re 88 
SEG ESA 2S ate 01S cy | a ne 94 
TELUS Gers eT NS Sa aie Ree eeaey eat SCR aia ae A Sem 101 
J ISTE ISG: I ge Oe ea ea ee to a 2 102 
| LEST) TR Gee a ae A en 103 
eee emcee as el Boot PP td As tg idem n 104 
NS LEGGE Aas oe tage Re Se 105 
J TEES CBI Cae a 8 IOI ee Bey a ea 111 
ch YE LENG SAI oe EME PORE? 9 Mee et ane oe 114 
“LICE EID ARGOS CEA ee a a a ar 118 
[1 TEE TS ae fie ae ee 121 
LOT EIEN FAR So aN int cn, ae 125 
POPSET ESS IS Sci ae ae Ck 125 
Na Te UNS Rae ae es ae eS 125 
