120 
MONOGRAPHS OF AMERICAN TIMBER TREES. 
The wall spaces between cases 8i and 86 are in process of in- 
stallation with groups representing the various more commercial 
timbers of North America. These monographic groups are being 
finished as rapidly as proper curing of the specimens will permit. 
The scheme is to represent each species by the following grouped 
specimens: 
I. A branch from the tree, in leaf, with the flowers and fruits, 
and an authentic piece of wood from the individual furnishing 
the branch. 2. A photograph of the tree in summer, showing its 
general form and character of growth. 3. A photograph of the 
identical tree in winter, showing its method of branching and gen- 
eral winter aspect. 4. A trunk section showing the bark and form 
characters; these trunks to be uniformly one-half the average size 
attained by the species, j. A cross section of the same trunk, 
showing the character of the annual growth. 6. A large detail 
map of North America, upon which the range of the species is de- 
picted in three grades of color, showing the principal, general, 
and limital extension of the timber. 7. A descriptive label, giv- 
ing the characters and utilization of the species. 8. A large 
plank, plain sawed, showing the objective commercial character 
of the lumber. Q. Various fancy boards showing the cabinet 
forms of the species. 
Between Gases 86 and 87.— Woods of Canada and Cali- 
fornia, also fine specimens of redwood burl, Washington pine and 
Kentucky yellow poplar. Beyond Case 87, at the end of the Sec- 
tion, may be seen four excellent examples of the principal timber 
trees of Alaska. 
Case 88.— Cereals of the United States, with milling prod- 
ucts illustrating their uses. 
