110 REPORT OF THE No. 3 



III. — Report of Liaison Officer 



During the season of 1928, operations carried out fall under four headings, 

 viz.: — 



1. Aerial Forest Type Mapping. 



2. Aerial Photographic Survey. 



3. Radio Communication. 



4. Miscellaneous Investigations. 



1. Aerial Forest Type Mapping. 



Two projects of this class were worked on during the past season, (a) in the 

 Rainy River, (b) in the Sudbury and North Bay Districts. Of these, the 

 Rainy River comprising an area of 3,500 square miles completed forest typing 

 in connection with the Rainy River Watershed Survey, which was commenced 

 in 1927. One hundred and seventy hours were used on this operation, one flying 

 boat being employed for the season and operating, first, from Fort Frances and 

 later from a base established on Shebandowan Lake, approximately seventy miles 

 west of Port Arthur. Forest typing in the Sudbury District was mainly under- 

 taken to provide information for the Branch estimating parties, working in 

 the northwest section of the Timagami Reserve. Some twenty-two townships 

 were covered and seventy-one hours flying used in this work. In addition, 

 when opportunity afforded, work was carried out on a section of the North 

 Bay District, lying between the T. & N. O. Railway and the Ottawa river. 

 This latter being a district operation was secondary to work on the Timagami 

 area mentioned above and was only carried out when weather was unsuitable 

 for survey flying over this area. Some 360 square miles were covered in this 

 latter work and approximately fifty-one hours flying used. Flying for both 

 these operations was undertaken from Bear Island Timagami, this being the 

 nearest suitable base. One machine was employed from early in July until the 

 end of the season. 



From the experience of this year, it would be much more satisfactory, 

 if for future work on this area, provision could be made for a machine to operate 

 from Mettagami Post. This will, however, necessitate the establishment of 

 mooring facilities at this point, as there is no adequate natural protection. 



2. Photographic Survey. 



Four major survey projects, based on Aerial Photography, were undertaken 

 during the past season. Three of these utilized oblique photographs and one 

 vertical. All were district projects, the districts involved being the Hudson, 

 Oba, Sault Ste. Marie and North Bay. 



In the Hudson District, it was proposed to prepare a detailed map, based 

 on vertical photographs of the area adjacent to all railway lines in the district. 

 It was considered that such a map would be extremely useful in the control of 

 railway and other fires occurring on the right-of-way. As the machine capable 

 of doing this to best advantage, the D.H. 61, was engaged in a variety of other 

 work and was not fitted for photograph when delivered by the company, delays 

 were inevitable. Added to this was the drawback of a very unfavourable season. 

 As a result, only a small portion of the operation was completed. 



In the Oba District, a railway right-of-way map, prepared from photographs 

 taken during the season of 1927, was checked by aerial sketching and ground 

 examination. In addition, some weaker sections of the Branch's aerial survey 



