From each locality, three to five dominant trees of merchantable size and approximately average age will be so chosen as to be representative of the dominant trees of the species.

Each species will eventually be represented by trees from five to ten localities.

These localities will be so chosen as to be representative of the commercial range of the species.

Trees from one to three localities will be used to represent each species until most of the important species have been tested.
The 16-foot butt log will be taken from each tree selected and the entire merchantable hole of one average tree for each species.
_Field Notes and Shipping Instructions_ Field notes as outlined in Form--_a_ Shipment Description, Manual of the Branch of Products, will be fully and carefully made by the collector.

The age of each tree selected will be recorded and any other information likely to be of interest or importance will also be made a part of these field notes.