1921-22 DEPARTMENT OF LANDS AND FORESTS 225 



nut" model, did not leave Clute on the Frederickhouse river until June 3rd, 

 owing to the spring flood. The party proceeded to Moose Factory, one of the 

 Hudson Bay Co. posts, with five weeks' supplies, slightly over a ton. Arrange- 

 ments were made at Cochrane to have a similar amount cached at the junction 

 of the Abitibi and Little Abitibi rivers within the five weeks. 



Work commenced five miles north of Moose Factory and extended south up 

 the Moose river to the junction of the Moose and Abitibi rivers, where the party 

 split, eight men going up the Moose and Mattagami rivers and seven men up the 

 Abitibi river. 



In addition to the above fifteen men on the rivers, two men were stationed 

 at the air base at Remi Lake to be placed by aircraft in regions lacking practicable 

 canoe routes. Later in the season two other men were taken from the river 

 party and used on this work. These parties were landed on lakes with from one 

 to three weeks' supplies and acted on the instructions of the aerial observers, 

 who decided what strips were necessary to cover the pulpwood in that particular 

 locality. In this way parties were placed on the following lakes; Kesagami, 

 Pierre, Indian Reserve No. 9 and unnamed lakes designated by the letters 

 F., G., J., K., L., N. on the map. For the final estimate, areas on which strips 

 were not run were compared by the observer with areas where samples were 

 taken. The aircraft was not equipped to carry a canoe which handicapped the 

 effectiveness of these parties. In some instances the planes while on sketching 

 work would land and transfer a party to another camping ground. 



The strip method consisted in running a compass and chain line 11 feet 

 wide and measuring all commercial species 4 inches (diameter taken at breast 

 height) and over, in one inch diameter classes. In this region in general the 

 cordage runs heaviest adjacent to the water courses, the types paralleling the 

 shore line. This characteristic feature of the timber distribution was directly 

 responsible for the field procedure of the ground parties, which usually consisted 

 in running a single straight strip per day at right angles to the general direction 

 of the shore line; occasionally a shorter strip in from the water, an offset of 

 3^ mile and a second strip back to water was substituted for the single long 

 strip. It was found that where a single strip was run it was possible to tally 

 43/^ miles; with two strips and offset, three in and three out, or a total of six for 

 the day. Results of the season's work go to show, however, that 4J^ miles in a 

 single strip, besides allowing for a better check of the aerial type map, gives a 

 much better basis for an estimate, of the timber in this type of country than the 

 two parallel three-mile strips, whose tallies tend to give too much prominence to 

 the better stands close to the shore and not enough to the poorer growth on 

 undrained areas inland. 



Two and three-man parties were used, three-man is recommended, that is 

 one caliperman, one compass man and a tally man. With three men, calipers 

 may be used and the caliperman is in a position to size up every tree. Calipers 

 were used every day for the first two weeks, after which dimensions were esti- 

 mated by eye. The caliperman checked himself once a week by taking his 

 calipers into the field. This gives actual calipering for 30 per cent, of the time. 



Throughout the season, June 3rd to September 20th, 470 miles of strip 

 were run. 



In addition to running strips, volume table data was collected for black 

 spruce generally throughout the whole area. The figures were compiled into 

 two general regional tables. (See tables 5, 6.). Measurements were made on 

 white spruce but it was found the volumes compared favourably with existing 

 tables and these were used. 



IS L.F. 



