5908-M. The ship Hugh M. Smith was used; 

 the cruise period was August 13-September 

 22, 1959; M. Blackburn was scientific leader. 

 After occupying the grid of stations off Baja 

 California, the ship proceeded to the Gulf of 

 Tehuantepec by the most direct route and 

 returned in the same way at the conclusion 

 of the Gulf survey. 



TO-60- 1 .--The purposes of the cruise were 

 (a) to make a detailed oceanographic study in 

 the general area of the mouth of the Gulf of 

 California, at the time of year when tuna 

 normally move through this area to the Pacific 

 coast of Baja California, and (b) to study, as 

 opportunity offered, physical structure and 

 distribution of physical, chemical, and biologi- 

 cal properties at well-defined thermal fronts. 

 Neither series of observations has yet been 

 analyzed. The ship used was the /^M^/i M.Smith; 

 the cruise period was April 30-May 27, I960; 

 R. C. Griffiths was scientific leader. 



Figure 2 shows the track of TO-60- 1. The 

 density of observations between stations 1 and 



38 was similar to that of the Baja California 

 survey of TO-59-2; the density of stations 

 further south was similar to that of the four 

 surveys of the Gulf of Tehuantepec. 



Table 2 summarizes the observations made 

 on cruise TO-60-1, which are comparable in 

 number and diversity with those of other 

 STOR cruises. 



Cruise of USCGSS Explorer .--By courtesy 

 of the Director of the U.S. Coast and Geodetic 

 Survey, a STOR staff member was able to 

 participate in an oceanographic survey cruise 

 between San Diego and Panama, from February 

 17 to March 1, I960. He was responsible 

 for adding phosphate and micronekton to the 

 range of properties measured on the cruise. 



STOR oceanographic survey methods .-- 

 Table 2 indicates the importance attached to 

 measurements of light and various kinds of 

 biota on STOR cruises. These properties vary 

 according to time of day and therefore, as far 

 as possible, certain observations were confined 



Figure 2.- -Track chart, cruise TO-60-1. 



