146 



DEPARTMENT OF THE NAVAL SERVICE 



Section 



6 GEORGE V, A. 1916 



8. Bocabec river. 



9. Bocabec river, farther out. 



10. Digdeguash bay. 



11. llagaguadavie river, near the mouth. 



12. L'Etang harbour, off Indian point. 



13. L'Etang harbour, off Trainor's landing. 



14. Black's harbour, off Connors' factory. 



15. Black's harbour, head of bay, equidistant from end and sides. 



16. Beaver harbour. 



17. Lepreau, off point with Square House. 



18. Head of Musquash bay. 



19. Bay inside Mahogany island. 



20. Bay W.S.W. of Shag rocks (near St. John). 



Oyster Culture, Southern New Brunswick. 



Mavor, Craigie and Detweiler. 



2. Hydrographic Observations. 



For taking the water samples a Pettersson-Nansen water bottle was^ used. This 

 consists of an insulated metal cylinder, open at both ends, which slides vertically 

 on two parallel brass rods. At the lower end of the brass rods a cap is fastened, 

 which, when the cylinder is lowered, closes its lower end. The upper end of the 

 cylinder is closed by a similar cap, which slides on the brass rods above. The 

 apparatus is so constructed that it can be lowered down with the cylinder open and, 

 when it arrives at the depth desired, can be closed by sending a weight down the 

 sounding wire. 



The temperatures were taken with a deep-sea reversing thermometer. In most 

 cases the Richter reversing thermometer attached to the water bottle was used. 

 (Laboratoire Hydrographique Kobenhavn, Preisliste, 1914, No. 75, Thermometer JSTo. 

 164). In the other cases a reversing thermometer by Negretti and Zambra, No. 

 170664, was used. In both of these thermometers the mercury column is narrow at 

 a point just above the reservoir. By reversing the instrument at any required depth 

 the mercury column is broken at the narrow part. The scale is marked. on the glass 

 so that the temperature at the time of reversing can be read off from the length of 

 the broken off part of the mercury column. In the Eichter thermometer an accessory 

 thermometer was included in the same case in order that a correction for the expan- 



