510 



G. H. DREW. 



KACTERIAL INVESTIGATIONS IN THE DEEP WATER IN 

 THE TONGUE OF THE OCEAN. 



Continued bad weather during the whole of our stay at Andros 

 greatly added to the difficulties of these investigations, and on this 

 account it was only found possible to work three stations. The last 

 two were worked under the most disadvantageous conditions, the quick 

 roll of the boat making the tilling of the water-bottle with Alcohol, and 

 the syphoning off of the sample under sterile conditions, a matter of the 

 greatest difficulty. 



The tirst station worked was situated six miles due east of 

 Golding Cay, the second 14 miles E. of Golding Cay, and the third 10 

 miles E.N.E. ^ E. of Golding Cay. The three stations were thus situated 

 at the angles of a triangle which was nearly equilateral, the base being 

 a little longer than the sides, and running due east and west. 



At the first station, worked on May 8th, bottom was sounded at 

 822 fathoms. The sea was calm at first, with a S.S.E. swell, but became 

 choppy later. The wind was S.S.E. , force to 1 at 8.30 a.m., freshening 

 to about force 3 at 10.30 a.m. The sample of the bottom obtained bv 

 the snapper rod was of a very stifi' clay-like consistency, greyish 

 white in colour, and was composed of very minute unorganized particles 

 of Calcium carbonate, containing a few pteropod and globigerina shells. 

 The following temperatures, to which the necessary corrections have 

 been applied, were recorded : — 



Depth in fathoms. 

 Surface 



10 



50 

 100 

 200 



400 

 600 

 Bottom (822 fths.) 



Temperature in degrees Centigrade. 

 26-90 



25-90 



25-U 



22-00 



17-13 



9-03\ 

 8-93J 



avemsre = 8-98 



4.78] 

 4-62, 



4-00) 

 3-94 1 



- averaEre = 4*70 



avera£re= 3*97 



