330 
herbarium species, and the like. Further, thane are statistical 
tables, descriptions of the life-history of fungi and insects and 
microscopical slides. Not only in the Netherlands, but also 
abroad, this division is very active. For example, the author 
noticed at the Lille Exhibition, in the department of Dutch 
exhibitors, a large stand on plant diseases which was sent by the 
Phytopathological Service of W ‘ageningen. 
Much work is done in organising Phytopathological Research 
in, the Dutch possessions, especially the Dutch East Indies, 
though a Phytopathological Service such as exists in Hol land 
has not yet been established. 
The Department of Agriculture has in Java a Laboratory 
for Plant Diseases where a staff of botanists and zoologists are 
already engaged upon various lines of research, while several 
private companies have also engaged botanists or trained phyto- 
pathologists to study various pests and diseases and to find 
means of eradicating them; such stations have been established 
in Malang and Deli, and the Java Sugar industry possesses one. 
No doubt in the near future the Dutch East and West some 
will also have a very extensive Phytopathological Service, as 
well organised as other institutes for tropical agriculture esd 
formed. 
XLIII.—THE YELLOW PINES OF NORTH AMERICA, 
W. DALLIMORE. 
In Canada and the United States there are several groups 
the most important being designated ‘“‘ yellow pine.” The 
yellow pines include species that are very different in general 
appearance and in working qualities, whilst they are as widely 
separated geographically as it is possible for them to be. From 
these facts it is desirable that persons handling the timber 
should have an intimate knowledge of the several species, and 
of their distribution 
The yellow pines include the following species : — 
P. cubensis, Grisebach. P. ponderosa, —— 
P. mitis, Michaux. P. Strobus, Linnae 
P. monticola, Douglas. P. Taeda, Siscioen ds 
P. palustris, Miller. P. virginiana, Miller. 
As all are known by several common names in addition to 
that of yellow pine, the various synonyms are given with each 
species. 
P. cubensis, Grisebach— Bastard Pine, Cuban Pine, Meadow 
Pine, Pitch Pine, She Pine, She Pitch Pine, Slash Pine, Spruce 
Pine, Swamp Pine, Yellow Pine. 
This is the most tropical of the Eastern N. American species. 
Its northern limit is reached in 8. Carolina, and it is found in 
Georgia, Southern Alabama, Louisiana and Florida, extending 
