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THE LABORATORIES 
Laboratories and working rooms for research are provided 
on the upper floor of the museum building, and properly 
qualified students of botany are permitted to make use of this 
equipment, under the direction of some member of the staff 
of the Garden. The equipment is designed to meet the needs 
of a very broad field of investigation including plant chem- 
istry, pathology, physiology and morphology. A valuable 
series of old microscopes, illustrating the history and develop- 
ment of that instrument, has been presented by Mr. Charles 
F. Cox. 
3. The Pinetum 
[CoLLECTION OF CONE-BEARING TREES] 
The collection of cone-bearing trees, technically known as 
the Pinetum, because the pines are the most abundant of 
these trees, is planted over a space of about 30 acres in the 
southwestern part of the grounds, extending from the approach 
to the elevated railway station southeast to the herbaceous 
garden, and northeast to the museum building and the bord- 
ers of the hemlock forest. The species of trees are grouped 
in genera, as shown by the accompanying plan. The plant- 
ing out of these trees was commenced in 1901, and, as rapidly 
as the finished grades of this portion of the grounds have 
been established and the driveways and paths completed, 
additional planting has been done; the collection will con- 
tinually become more complete year by year as additional 
species are secured; many of these have to be raised from 
seed, and the process of establishing a collection of conifers 
thus requires much time. 
Commencing at the approach to the elevated railway 
station we find the Douglas spruce (Pseudotsuga mucronata) 
planted in the space between the traffic road and the park 
driveway to the left of the path leading to the Conservatories ; 
this tree is a native of western North America from the Rocky 
Mountains to the Pacific Coast and is sometimes known as 
Red Fir. In the far northwest it sometimes becomes 180 
to 210 feet high, its trunk occasionally as much as 3% feet 
