The marking is usually done by blazing each tree and stamping the letters "U. S." upon the blaze with a Government marking axe or hatchet. It must be done in such a way that the loggers will have no excuse either for cutting an unmarked tree or leaving a marked tree uncut, or _vice versa_, as the case may be. The marking may be carried out by the Rangers and Forest Guards under supervision of the Forest Assistant, or in difficult situations he may mark or direct the marking of each tree himself. Marking is fascinating work.
Later, while the logging is under way, the Forest Examiner will often inspect it to see that the terms of the sale are complied with, that the trees cut are thrown in places where they will not unduly damage either young growth or the larger trees which are to remain, and that the other conditions laid down for the logging in the contract of sale are observed. The scaling of the logs to determine the amount of payment to the Government will many times be under his supervision, although in the larger sales this work, as well as the routine inspection of the logging, is usually carried out by a special body of expert lumbermen, who often bring to it a much wider knowledge of the woods than the men in actual charge of the lumbering.
In nearly every National Forest there are areas upon which the trees have been destroyed by fire. Many of these are so large or so remote from seed-bearing trees that natural reproduction will not suffice to replace the forest. In such localities planting is needed, and for that purpose the Forest Examiner must establish and conduct a forest nursery. The decision on the kind of trees to plant and on the methods of raising and planting them, the collection of the seed, the care and transplanting of the young trees until they are set out on the site of the future forest, forms a task of absorbing interest. Such work often requires a high degree of technical skill. It is likely to occupy a larger and larger share of the time and attention of the trained men of the Forest Service.
[Illustration: A FOREST EXAMINER RUNNING A COMPASS LINE]
The Forest Assistant's or Examiner's knowledge of surveying makes it natural for him to take an important part in the laying out of new roads and trails in the forest, or in correcting the lines of old ones, and there is little work more immediately useful. The forest can be safeguarded effectively just in proportion to the ease with which all parts of it can be reached. Forest protection may be less technically interesting than other parts of the Forester's work, but nothing that he does is more important or pays larger dividends in future results.