GROUPING OF SPECIES. 87 
setting a wind-break, Hucalyptus globulus, E.. rudis, and LF. viminalis 
would be the most satisfactory ones of the above list. One of the 
three can be grown in most situations where a wind-break would be 
desired. 
Useful for shade: Hucalyptus botryoides, E. cornuta, E. corynecalyx, 
E.. diversicolor, EF. globulus, F. hemiphtora, Fe. leucoxylon, E. metlio- 
dora, EL. polyanthema, EL. robusta, E. rudis, and EF. viminalis. As 
there are few situations in the settled portions of the Southwest where 
one or more of the above will not grow, settlers may all have the 
pleasure of the shades of an evergreen wherever they may be located 
in that part of the United States. 
Useful for fuel: Aucalyptus botryoides, EF. coriacea, EF. conynoealy 
E. diversicolor, EF. macrorhyncha, L. melliodora, b. obliqua, FE. occi- 
dentalis, FE. polyanthema, E. resinifera, FE. rostrata, FE. stuartiana, and 
E.. tereticornas. 
Useful for posts, railway ties, and other underground purposes: 
Eucalyptus botryoides, E. corymbosa, FE. corynocalyx, FE. crebra, FE. 
eugenioides, E. goniocalyx, Lt. hemiphtlova, L. longifolia, E. melliodora, 
E.. microtheca, 1. paniculata, EL. pitularis, EH. polyanthema, FE. pune- 
tata, EL. resinifera, 1. robusta, L. rostrata, EF. rudis, FE. siderophloia, 
E.. sideroxylon, Lt. stuartiana, and L. teretecornis. 
Judging from inquiries received by the writer and from statements 
made by farmers, there are few more important purposes that the 
Eucalypts are likely to serve than that of furnishing fence posts. 
From the above list one or more can be selected that will thrive in 
most of the various situations in the Southwest, as a reference to the 
grouping according to climatic adaptations will show. Probably the 
most generally useful of the list for posts is the Sugar Gum (Hucalyptus 
corynocalyx). It thrives in most situations in the Southwest; makes a 
fairly rapid growth; has a straight, even stem, especially when grown 
in blocks; and furnishes material for very durable posts. The Forest 
Red Gum (£/! tereticornis) gives promise of proving nearly as useful 
for the above purposes. 
Useful for piles: Aucalyptus citriodora, LE. globulus, E. hemiphtlota, 
FE. marginata, F. resinifera, and FE. rostrata. 
Useful for street paving: Hucalyptus citriodora, FE. corymbosa, 
E.. longifolia, £. pilularis, E. resinifera, and FE. rostrata. 
. Useful for telegraph poles: Hucalyptus citriodora, E. pilularis, 
E.. rostrata, and FE. tereticornis. 
Useful for shipbuilding: Hucalyptus diversicolor, L. globulus, E. pitu- 
laris, Li. rostrata, E. siderophloia, E. sideroxylon, and LF. tereticornis. 
Useful for vehicle making: Hucalyptus botryoides, FE. citriodora, 
Lt. cornuta, £2. corynocalyx, F. diversicolor, E. globulus, E. goniocalyzx, 
EL. hemiphloia, F. melliodora, E. polyanthema, and EF. punctata. 
Useful for agricultural implements: Hucalyptus ettriodora, EL. cor- 
