PLATE XXVII 



Fig. I. Varied bottom, at depths between 125 and 340 fm. (229 and 

 622 m.) in the Schollaert Channel, Palmer Archipelago. Speed of 

 ship shown on record. Vertical scales: at 3 knots, x 3-24; at 9 knots, 

 X 9-72. Note interference to the mains supply caused by induced 

 current from ship's W/T apparatus. (Part of Record XV/34.) 



Fig. 2. Moderately irregular bottom in the Bransfield Strait, South 

 Shetlands, on a course from Fildes Strait to Deception Island. 

 Section of record shown lies about 4 miles south-east of the coast 

 of Roberts Island. Speed of ship, ca. 3-5 knots. Vertical scale, 

 X ca. 3-8. (Part of Record XXVII/34.) See Text-fig. 4 (6), p. 47. 



