1915] Michael, et al.: Hydroyrapliic liecords of Scripps Iiistihidou 133 



C. Biological Field Data 



EXPLANATION OF TABLE 5. PART A 

 This part includes all the field data relative to the plankton col- 

 lected prior to July 12, 1908, the collections being mainly of a pre- 

 liminary nature. 



First column. — Numbers under which the collections were accessioned; they 

 are arranged, as a rule, according to date from May 16, 1904, to May 20, 1905, 

 then from May 22, 1901, to January 5, 1904, then from June 19, 1905, to July 29, 

 1907, then from June 11 to June 12, 1908, and finally from November 2 to 

 November 3, 1907. 



Second column. — Ajii)aratus used in making the hauls: 000, 8, 12, and 20 refer 

 to tow-nets (see p. 9) of the mesh indicated having the dimensions given in 

 Appendix I. K.B. refers to the Kofoid water bottle (see p. 11). P.P., P. 12, 

 P.20, and P.D. refer to the sub-surface pump (see p. 11), the F indicating that 

 the water was filtered through filter paper, the 12 through No. 12 netting, and 

 the 20 through No. 20 netting, while the D indicates that after settling the 

 water was decanted. 



Third column. — Date. 



Fourth column. — Time and duration of haul entered to the nearest five minutes, 

 which is as close as it was ever originally recorded. 



Fifth column. — Section; for explanation see page 46. 



Sixth and seventh columns. — Latitude and longitude entered usually to the 

 nearest 0;i ; the position is probably not accurate to more than 0.5 miles. 



Eighth column. — Depth at beginning and end of haul entered to the nearest 

 meter above and to the nearest five below 100 meters; the error is probably 

 greater than this would indicate. 



Ninth column. — Miscellaneous remarks relative to hauls. 



