13. Launching 1/2- and 1-m nets to begin standard CalCOFI plankton tow. 15 



14. Streaming net just before lowering 16 



15. Rinsing down plankton after net tow before removing cod end with 

 sample 16 



16. Installation of 5-gal (18.91 liters) heavy-gauge plastic carboys of 

 concentrated formaldehyde aboard R/V David Starr Jordan 17 



17. Two-way, double action valve on syringe 18 



18. Labels for plankton samples 18 



19. Flow diagram of procedures by the National Marine Fisheries Ser- 

 vice for the processing of plankton, fish eggs and larvae, and data 

 through tape storage. La Jolla, Calif 20 



20. Plankton-volume data sheet. — A sample copy of a sheet made out 



for stations 60.50 to 70.80 on cruise 7003-"Ofiro??." 21 



21. T-Guide and float, actual size 22 



22. T-guide in use in first step in measuring plankton volume 23 



23. Pouring plankton and preservative into draining cone is the third 



step of measuring plankton volume 24 



24. Reading volume is the fourth step of measuring plankton preserva- 

 tive after plankton has drained to an occasional drop 24 



25. Arrangement of plankton sorter's work 25 



26. Plankton sorter's tabulation sheets for measuring fish larvae — 

 sample copy of one of two sheets used to measure anchovy larvae 



for station 80.52, cruise 6801, regular mesh (50.5/Li) 27 



27. Plankton sorter's work sheet — sample copy for station 80.52, cruise 

 6801-H, regular mesh (505 fi) 28 



28. Two-dram (7.4 ml) vials and caps used for sorted and identified fish 



eggs and larvae 28 



29. Plankton sorter's master sheet — sample copy for stations 60.50 to 



83.51, cruise 6801 29 



30. Identifier's tabulation sheet — sample copy of sheet for station 80.52, 



cruise 6801 30 



31. Sample sheet of code numbers, for automatic data processing, as- 

 signed to the fishes of the California Current region 31 



32. Identifier's tabulation sheet with the same identifications as those 



listed in Figure 30 32 



33. Board used to calibrate T.S-Flowmeters 33 



34. Brass frame under calibration board on which to hang flowmeters. . . 33 



35. Calibration of flowmeter — sample copy of record for meter #1179 



on June 21, 1966 34 



36. Calibration curve for flowmeter #1179 obtained by plotting two sets 

 of calibrations and drawing the curve on the average of the cali- 

 bration points 35 



37. Sample copies of standardization of data in sets for the first 10 sta- 

 tions of cruise 6607-J 36 



38. Regression line derived from data of stations 60.50 to 80.55, Nos. 



1 to 43 by order of occupancy on cruise 6607-J 37 



Tables 



1. Gear and apparatus used for the collection and processing of data 



on fish eggs and larvae in the California Current region 4 



2. Organisms identified and enumerated and or measured during sort- 

 ing of CalCOFI plankton samples 26 



iv 



