588 AMERICAN FORESTRY 



time and therefore it was best to take were cautioned to get as many heights 



pains and lay the work out well. as possible but to be sure to get the 



As all of the work in the field had heights of all of the very large trees 



to be done by pacing, therefore of and to distribute the rest of the heights 



course the work on the practice sections over as wide a range of diameters as 



had to be done in the same way. But convenient. These heights were in the 



most of us had not paced very much form of the number of sixteen foot 



and those that had done so had gotten logs in the tree allowing about sixteen 



out of practice. Professor Chapman inches for the average stump height, 



therefore placed the corner of the imag- Every man on every crew had to per- 



inary township exactly one mile by form each of these jobs so that we all 



steel tape from a certain point on the had a fair chance at the work as it 



railroad track in front of the cook progressed. 



shanty, and set a stake at each quarter The idea of doing all this blazing and 



of a mile. Every morning as we went measuring was to get as accurate an 



to work and every night when we re- estimate of the standing timber on each 



turned we paced off that mile, and as of the forties as possible. From the 



the work lasted for a number of weeks, D. B. H. tally we got a complete tally 



by the time we were ready to go out of the number of trees of each diam- 



on the actual field work we knew our eter on the forty and from the height 



pace very well and, what is much more measurements we got an excellent idea 



to the point, we became used to pacing of the number of logs in trees of all 



and had learned a lot about regulating diameters, 



our pace over different kinds of ground. From the above data estimates on the 



After laying off the forties crews contents of the different forties were 



were sent in on each of them to tally worked out by means of a volume table 



the merchantable timber. In this work based on the D. B. H. and the number 



the crews worked in strips calipering of logs in a tree, and this set of esti- 



every tree of merchantable species mates was assumed to be as nearly cor- 



short leaf or loblolly pine of a diam- rect as it was possible to get them with 



eter greater than 10" at breast height, reasonable amount of work. And in 



One man of the crew tallied the diam- addition to the estimate, a tallv was 



eters of the trees as they were cali- made of the number of trees of each 



pered by the others. As a tree was diameter and of each height in num- 



calipered the man who calipered it ber of logs on every forty. This was 



called out the diameter to the tally- used as a checking system for our work 



man and then blazed the tree to show and proved very valuable, 



that it had been tallied. The trees When all of the above work had been 



were blazed on the East side for the finished, the actual work on the prac- 



West half of the forty and on the tice forties began. The method was 



the West side for the East half of the about as follows : 



forty, so that any tree which was above At first crews of six men were sent 



10" D. B. H. and which had not been out on the sections. These crews con- 



calipered and tallied could be easily sisted of a compassman, a checker and 



found by walking down the central line four estimators. Each crew ran 



of the forty and looking on both sides strips ten rods wide back and forth 



of the line. In measuring these diam- across the forty, making one strip just 



eters the scale of the calipers was read touch the next one and in this way 



only to the nearest inch. covering the entire area the first time 



While this work was going on two the forty was run. After the forty had 



men of the crew were taking height been run once, the crew turned about 



measurements with Faustman Height and re-ran the same forty again. The 



Measures, recording the . merchantable reason for this was because on the 



height of the trees along with their first running the cruisers walked on 



D. B H. In doing this work the men one side of the man with the compass 



