YACHT “VELERO III’’ 
_ Hancock Expedition, 1934, Temperature and Salinity Data 
Dr. Waldo L. Schmitt, Chief of the Division of Marine Inverte- 
brates of the United States National Museum, while on an expedition 
on Capt. Allan Hancock’s yacht, Velero IIT, along and off the west 
coast of South America in February 1934 made a few vertical sections 
at which the surface and subsurface temperatures were read and water 
samples for the determination of salinity were collected. The water 
samples and temperature records were sent to the Scripps Institution. 
- The chlorinity of each sample was determined by Miss Katherine 
Gehring, technical assistant at the Scripps Institution. 
The temperature readings were corrected by Mr. Richard H. 
Fleming, research assistant at the Scripps Institution, by means of 
data from the Bureau of Standards test sheets for the two ther- 
mometers used. For the left-hand thermometer (Richter and Wiese 
no. 1453), the V, value was given on the Bureau of Standards test 
sheet. As this value was known, the readings were corrected by 
means of tables based on Soh piachae’ s formula. The V, value for 
the right-hand thermometer was not recorded (Fried and Lustig no. 
762), but this was calculated from the Bureau of Standards data by 
means of Schumacher’s formula. The calculated V, was found to be 
183. The temperature readings were then corrected from Schu- 
macher’s tables and the calibration errors as found by the Bureau of 
Standards. eee aae 0) | 
Except for a few of the 1-fathom observations duplicate tempera- 
tures were obtained in all cases. As the majority of the readings were 
read only to the nearest 0.1° C., in all cases where one or both of the 
values were only given to the nearest tenth the average of the cor- 
rected values are given to the nearest 0.05°. 
_ Except in five cases where the duplicate observations differed by 
_ more than 0.2° C., the average difference between the two thermom- 
eter readings was 0.06° C. The average corrected values may be 
considered accurate to +0.05° C. 
eae material has been prepared for publication by Mr. Fleming. 
(39) 
