19 



Fig. 4b. Sample print-out of IBM species-data cards. 



The cards were later re-sorted systematically for printing. The total 

 number of station occurrences of each species is listed next and, finally, 

 all station numbers at which each species occurred, plus the number of 

 living and dead individuals for each species at each station (fig. 4b). The 

 third card was devised to be paired with the species data card and contains 

 the identical species number, a letter designating the class or phyla, and 

 the complete scientific name to subgenus and species (fig. 4c). This last 



