Canadian Forestry Journal, July, ig20. 



• 0/ 



Price Bros., Limited, Aerial System 



A n Interesting Description of a 

 Canadian Pulp and Lumber Company's Aerial 

 Operations 



One of the striking features of the 

 Great War was the remarkable work 

 accomplished by the aeroplane and the 

 great benefits that might be derived 

 from its use by the business interests 

 throughout the world, and among 

 those who were attracted by its possi- 

 bilities were a number of Canadian 

 lumber firms. To the war also can be 

 attributed the tremendous advance in 

 recent years in the development of air- 

 craft, both in respect to the mechanism 

 and its control on the part of the pilots. 



Among the firms that were quick to 

 I'ealize the great advantages likely to 

 result from putting into force an aerial 

 service was that of Price Brothers, 

 Limited, of this city, whose limits cover 

 an area of over 8.000 square miles, 

 scattered throughout the Eastern part 

 of the Province of Quebec, and the fol- 

 lowing summary of the work that will 

 be done, the equipment used and the 

 personnel employed by the Company, 

 which is but a prelude to more exten- 

 sive aerial operations, will, no doubt, 

 be read with interest, not only by those 

 engased in the hunber l)usiness, but 

 also by those who have the welfare 

 and progress of their country and pro- 

 vince at heart. 



Photography and Mapping 



The operations will consist of photo- 

 graphing with special aerial cameras a 

 part of the limits of Price Brothers cK: 

 Co. The photographs once developed 

 will either be enlarged or reduced t( > a 

 predetermined scale, l)uilt into mosaic 

 maps and then re jihotographcd into 

 finished aerial maps ready for compari 

 son with known sur\eycd grtnnid. 

 Special i)hot()gra])hs of dams, rixcr 

 he;ids. burnt areas, ets.. will be iu.kK 

 fnini photographs t;d<en .it a liciglit d' 

 1,000 feet. The c;inier,is that will be 

 employed :\yv two Thonilon Tickiird 

 as were used on llie Western ImohI 

 during the late war. also one Model 



K-r Aero Film camera that contains 

 a roll of 100 films ; this latter camera 

 is used solely for map making and sur- 

 \'ey work ; a plane flying at 10,000 feet 

 can photograph with a single roll of 

 100 films over 75 square miles of terri- 

 tory, allowing for overlaps. 



To facilitate this work the maps of 

 the Province of Quebec have been 

 squared according to the military 

 system used during the war. The 

 squaring and lettering system has been 

 approved by the Forestry Branch of 

 the Provincial Government of Quebec, 

 and several large lumber firms. 



Type of Machines 



In the carrying out of this work 

 special attention had to be paid to the 

 class of machines provided, and those 

 to be employed are two iMartinsvde 

 type "A" ]\rark i Seaplanes, convertible 

 into land |)lanes, both of which are 

 eauipped with a Falcon in Ri:)lls 

 Royce i2-cylinder engine of 2J^ H.P. 

 Their climl)ing power with full load of 

 T,ooo lbs. is 10,000 feet in 15". They 

 ha\'e a maximum si)eed of 127 m.]\h. 

 Either i.ooo lbs. of cargo and a pilot, 

 with fuel for scA-en hours, can be car- 

 ried : or J, _:; or 4 passengers, with 200 

 ll)s. of c.irgo and pih^t. When it is 

 deci(U'(l to carry out more extensive 

 filing operations more of this type of 

 machine will be em|)loyed. 



All e(inipment useil in this depart- 

 ment w.i- purchased in England, and 

 is the \ cry best i^\ its kind for the 

 W( irk. 



Staff 



i\eali/in.u that the n.ature of tlie 

 work re(|uire(l. the utmo-^l skill on 

 tlu- part ^^i those engaged upi>n it. the 

 firm of Price l^rothers, Eimited. set 

 about obtaining men wlu^se attain- 

 nu'iits in the .art of flying left no doubt 

 ;is to their (pi;ilific;itions in this respect. 

 and .ill jiildts employed are late Offi- 



