TABLE 1 



Frequency of Ogcurrexce of Heterotrophic Bacteria (in Percentage) in 



Different Regions of the World Ocean (in 30-50 ml of W.\ter) 



No. 



Seas 



The Quan- 

 tity of Date 

 Filtered of the 

 Water Expedition 



Stations 

 (in All) 



M 

 Samples Depth 

 (in All) 



10 



11 



12 



13 



14 



The Greenland Sea 

 (Kriss, 1959, table 125-126) 



The deep-water stations in the 



Sea of Okhotsk and in the 



northwest part of the Pacific 



Ocean (Kriss, 1959, table 10)* 



The north-west part of the 



Pacific Ocean (Kriss, 1959, 



table II)* 



The central part of the 



Pacific Ocean (Kriss, 1959, 



table 112-118)* 



The Antarctic sector of the 



Indian Ocean (our own material 



The Subtropics and tropics 



of the Indian Ocean 



(our own material) 



The Black Sea (Kriss, 



1959, table 19) 



The Otranto strait 



(our own material) 



The strait of Tunis 



(our own material) 



The Levant Sea 



(our own material) 



The Tyrrhenian Sea 



(our own material) 



The central part of the 



Mediterranean Sea 



(our own material) 



The Ionian Sea 

 (our own material) 



The Sea of Crete 

 (our own material) 



40 



35 



July-August 

 1956 



1951 



34 



30-40 



1953 



451 



61 



184 



44.8 



52.5 



55.4 



*The estimations have been made by us from tabular data of Kriss's 

 and on the grounds of our own figures obtained during the cruise of 

 the "Ob" over the Indian Ocean. 

 **Recomputation has been made for 40 ml. 



researches (1959) 

 diescl electric ship 



