. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 138 DISCOVERY REPORTS monthly intervals on each side of it, the points are divided up into a number of groups representing pregnancies starting in each month. When the pregnancies are counted and plotted against months, the curve shown in Fig. 42 giving the frequencies of pairing by months, is obtained. This makes it clear that the majority of pairings take place in the months of August to December inclusive, with the maximum in October. By plotting the same curve with the time scale shifted 15
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 138 DISCOVERY REPORTS monthly intervals on each side of it, the points are divided up into a number of groups representing pregnancies starting in each month. When the pregnancies are counted and plotted against months, the curve shown in Fig. 42 giving the frequencies of pairing by months, is obtained. This makes it clear that the majority of pairings take place in the months of August to December inclusive, with the maximum in October. By plotting the same curve with the time scale shifted 15 months later the curve of birth frequencies shown in Fig. 43 is obtained. This shows the season of parturition extending from December to April, with the maximum in 'jun'jul'Aug'Sep Oct Nov Dec Jan Feb Mar Apr Fig. 42. Sperm whale. Pairing frequencies by Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Institute of Oceanographic Sciences (Great Britain); National Institute of Oceanography of Great Britain; Great Britain. Colonial Office. Discovery Committee. London ; New York : Cambridge University Press
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