152 DEPARTMENT O'F THE NATAL SERVICE 



6 GEORGE V, A. 1916 



The density of the water . samples was determined by means of a delicate hydro- 

 meter at room temperature, and corrected to read at 15-56° C. by Buchanan's dia- 

 gram,^ as in the case of the densities recorded in the report referred to above. Thf» 

 nature of the bottom at each station was determined by means of soap in the bottom 

 of the sounding-lead. The data obtained are tabulated at the end of the report. 



The stations were selected so as to give four vertical sections, two of the lower 

 St. Croix river, one of Passamaquoddy bay from Tongue Shoal light to Pendleton 

 island, and one of the Western channel, the last section being the deepest studied in 

 this investigation. The numbers and locations of the stations are as follows: — 



Station 1. On a straight line across the St. Croix river at the Biological Station, 

 such that the flagstaff on the end of the pier is in line with the 

 centre of the window in the water tower, 0-3 mile from the 

 Biological Station. 



" 2. On the same line 0-5 mile from the Biological Station. 



" 3. On the same line, 0-7 mile from the Biological Station. 



" 4. On the same line 1-1 mile from the Biological Station. 



*' 5. On a straight line across the mouth of the St. Croix river at St. Andrews, 



such that the two beacons at the north end of the harbour are in 

 line. In the centre of the steamer channel beside the inner beacon. 



" 6. On the same straight line, at the buoy just outside the outer beacon. 



" 7. On the same straight line, 1-7 mile from the St. Andrews shore. 



" 8. On the same straight line, 2-1 miles from the St. Andrews shore. 



" 9. On the same straight line, 2-4 miles from the St. Andrews shore. 



" 10. On the same straight line, 2-7 miles from the St. Andrews shore. 



" 11. On a straight line drawn from Tongue Shoal light to Deer island, such 

 that Tongue Shoal light always appears in the centre of Chamcook 

 hill. At the buoy off Tongue Shoal light. 



" 12. On the same straight line, 0-8 mile from Tongue Shoal light. 

 , " 13. On the same straight line, 1-3 mile from Tongue Shoal light. 



" 14. On the same straight line, 1-8 mile from Tongue Shoal light. 



" 15. On the same straight line, 2-4 miles from Tongue Shoal light. 



" 16. On the same straight line, 2-8 miles from Tongue Shoal light. 



" 17. On a straight line drawn across the Western passage from the first island 

 south of Frost ledge to the highest part of Clam Cove head, O-liS 

 mile from small island. 



" 18. On the same straight line, 0-3 mile from small island. 



" 19. On the same straight line, 0-6 mile from small island. 



The distances recorded in the above table are in geographical miles. The points 

 were determined by landmarks upon the shore and were afterwards located on the 

 chart. The exact position of these stations is shown upon the accompanying map, 

 upon which the beacons and the Tongue Shoal light, which were used in determining: 

 the sections, are also indicated. The 10-fathom line has been inserted to show the 

 shape of the deeper part of the basin, with a tongue extending out from St. Andrews. 

 The part of the 10-fathom line extending along the shore of Deer island from the 

 Western passage to Letite passage was not marked on any of the charts examined 

 and has been filled in as accurately as possible from the soundings recorded on the 

 chart. It is possible that a very narrow channel over 10 fathoms deep runs right 

 through Letite passage, which appears at the extreme right of the map. The com- 

 pass marked on the map shows the direction of the magnetic needle. 



3 J. Y. Buchanan — " Report on the Specific Gravity of Samples of Ocean Water, observea 

 on board H. M. S. Challenger during the years 1873-76." Report of the Scientific Results of the 

 Exploring Voyage of the Challenger, Physics and Chemistry, Vol. 1, 1884, Diagram 1 



