6. 1 Goast & GGOclGtic Survoy salinity apparattta './ith j.11 necessary 



chGiiiicals and cquipmont for the analysis of sea water. 



7. 1 Drift stick, v/oightod at 15 feet,' 



8. 1 Elcman current meter (Univorsity of Washington)* 

 9.' 2 Nansen itnudson type v/ator "bottles, U.S. C.G-. 



10. 5 Improved typo v.' -.tor bottles, NorthV/est Instrument Co. 



(University of Washington). 



11. 7 messengers (2 U.S.C.G., 5 Univorsit^y of Wr.shirigton)-. 



12. 7 protected thermorae-tors,. reversing typo (Richter and Wioso mcke) 



#2189, 3167, 3168, 3169, 3170, 3171 and 3172 (U. of W. ) . 

 13,i '2 above typo U.S.G.G. 



14. 2 unprotected therraomoters, reversing typo of Richter and Wieso 



make #2$65 r.nd 2966 (U. of W. ) . 



15. 2 snapper type bottom scm.plers with load weight (U.S.G.G-*). 



16. 1 dredge type bottom sampler, 



17. Equipment of nets and bottles for obtaining phyto plankton data. 



(*). The current meter was of the latest Ekman typo and had been calibrated 

 before use by Prof. V. V/alf red Ekman of Sweden. 



The object of the cruise was to study the chenistry of tho Bering 

 Sea ocean floor, of the ocean water and of the various organisms and plants. 

 This was accomplished by obtaining samples of water from wliicli density and 

 currents i^xe calculate.djtemperaturos measured, obtaining sasaples of water 

 for determination of minor constituents and to study the vertical and 

 geographical distribution of genera and species present. 



The physical properties, namely temperatures, pressures and'.Slie .-opncen- 

 tration of salts were studied. The temperatures were measured first by " 

 ordinary theitoometer immersed in v/ater hauled on board with a bucket, secondly 

 by recording thermograph placed in the intake of tho condenser giving a 

 continuous record of the surface temperatures, thirdly, intake temperatures 

 taken hourly by the engineer force, fourth, reversing thermometer to obtain 

 temperatures at various depths. 



Gollection of Saraples. The CHELAN was provided .with an electric 

 winch and 600 fathoms of sounding wire for sampling operations. Tho length 

 of the wire limited the sampling depth to approximxatciy 1000 meters which was 

 enough in most cases, as only 9 of tho 120 stations occupied exceeded that 

 depth. Samples were collected by means of reversing bottles of tho Nanson- 

 Khudsen type. Seven levels could be sampled at one haul, a sufficient 

 number for all stations in the shallow region north of the Pribilof Islands, 

 Two hauls were necessary at the deep stations -south of the Pribilofs, 

 Samples were drawn in duplicate from the v/ater bottles into citrate bottles. 

 The latter were tagged then stored i*n wooden cases to prevent brcakago. One 

 of the duplicates was used in the determination of nutrient salts soon after 

 san^ling. The other vjas reserved for chlorinity determinations which wero 

 made either in port or at tho Ocoaiiographic Laboratories at the end of the 

 cruise. 



Bottom saraples wore obtained at a number of stations by means of a 

 clam -shell grab. Those samples wore stored in pint and q,uart jars for 



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