The following samplers, previously described in Reference 2, were used to 

 collect sediment samples from the deep sea: 



1. A gravity core sampler, which takes cores up to 4 feet long. 



2. NCEL's scoop-type sampler, which collects about 225 cubic inches of 

 sediment from the soft bottom of the ocean. 



3. A ZoBell bacteriological sampler with a sterile sampling unit (modified in 

 order to collect a mixture of seawater and sediment at the seawater - 

 sediment interface). 



The results of the bacteriological analysis of the sediment samples are presented 

 in Tables 5, 6, and 7. 



Table 5. Aerobic and Anaerobic Bacteria in Core Samples of Sediment 



Sample 

 No. 



Depth 

 (ft) 



Depth of Sample 



Below Ocean Floor 



(in.) 



Aerobes 

 (per gram 



of wet 

 sediment) 



Anaerobes 

 (per gram 



of wet 

 sediment) 



Presence (+) or 



Absence (-) of 



Sulfate Reducers 



CI 62 



5,300 



0-1 



12,000 



600 



+ 







3-3.5 



10 



200 



+ 







6-6.5 







600 



+ 







12-12.5 







200 



- 







24-24.5 







50 



+ 







36-36.5 











- 



C163 



5,300 



0-1 



6,000 



5,000 



+ 



C262 



5,640 



0-1 



2,000 



300 



+ 







1-1.5 



1,000 



500 



+ 







2.5-3.0 



30 



30 



+ 



C362 



5,640 



0-1 



8,000 



5,000 



+ 







3-3.5 



60 



60 



+ 







6-6.5 











+ 







12-12.5 











+ 







18-18.5 











+ 



10 



