53 



Til Sammenligning hidsættes her de af Ekman fundne 

 Værdier for Volumet af 4 Vandprøver ,1, B, C og V af 



respective Egenvægter ved , l' iÉ 1.01603, 1.01982, 1,02306, 



1 5° 



os 1.02695. 



For den af mig undersøgte Vandprøve I er efter de 



forhen beskrevne Observationer fundet Egenvægten 1.02(391 



17.°5 15° 



ved ■--- eller 1.02707 reduceret til -. , medens Ekman 

 17.°o lo 



for Vandprøven D har fundet Egenvægten 1.02695 ved 



lo" 



-ir- , og det fremgaar saaledes, at Undersøgelserne for disse 



lo 



Vandprøvers Vedkommende meget godt kunne gjøres til 

 Gjenstand for Sammenligning. En saadan Sammenligning 

 viser let, at der paa alle Puncter selv for Temperaturerne 

 under 0° existerer en tilfredsstillende Overensstemmelse, 

 idet Differentserne i Regelen ikke overstige 0.00001 og fol- 

 de høiere Temperaturer, hvor de antage sin største Yærdi. 

 kun gaa op til omtrent 0.000025, en Uoverensstemmelse, 

 som, naar Hensyn tåges til Forskjellen mellem Vandprø- 

 vernes Egenvægter, end yderligere kan reduceres. Med de 

 ovenfor nævnte af andre Chemikere udforte TJndersøgelser 



For comparison witb these figures, are annexed the 



valnes found by Ekman for the volume of 4 samples of 



1 5° 

 sea-water, A, B, C, and D, their specific gravity at 



10 



being respectively 1.01603. 1.01982, 1.02306, and L.02695. 



—5 



—4 



—3 



— 2 



— 1 



o 



1 



2 



3 



4 



5 



6 



7 

 8 



9 

 10 

 1 1 

 12 

 13 

 14 

 15 

 16 



17 

 18 



19 

 20 

 21 

 22 

 23 

 24 

 25 



I' n( A 



1. 000 1 45 

 1.000087 

 1.000044 

 1. 0000 1 5 

 1. 00000 1 

 1 .000000 

 1. 0000 1 9 

 1.000047 

 1.000096 

 1. 000154 

 1.000223 

 1.000305 

 1.000399 

 1.000504 

 1.00062 1 

 1.000749 

 1.000888 

 1. 001038 

 1. 00 1 199 

 1. 001370 

 1-001551 

 1. 001742 

 1-001943 

 1. 002153 

 1.002373 

 1. 002601 

 1.002839 

 1.003085 

 1.003340 

 1.003602 

 1.003875 



V t of B 



V, of C 



V, of I) 



1.00006 1 

 1.000020 

 0.999994 



0.999983 

 0.999985 

 1. 000000 

 1.000035 

 1.000083 

 1. 000 1 42 

 1.0002 13 

 1.000296 

 1.000390 

 1.000495 

 1. 0006 1 2 

 1.000739 

 1.000877 

 1. 001026 

 1. 001 185 

 1. 001354 

 1-001533 

 1.001719 

 1. 001925 

 1. 002134 

 1-002353 

 1.002582 

 1.0028 1 9 

 1.003062 

 1.00332 1 

 1.003588 

 1. 003861 

 1. 004 1 44 



0.999983 



o-999959 

 0.999948 



0-999953 

 0.999969 

 1. 000000 

 1.000043 

 1. 000 1 00 

 1. 000 1 68 

 1.000249 

 1.000344 

 1.000450 

 1.000567 

 1.000696 

 1.000836 

 1.000985 

 1. 001 145 

 1-001315 

 1. 00 1 495 

 1. 001683 

 1. 001880 

 1.002085 

 1.002299 

 1.002520 

 1.002749 

 1.002984 

 1.003227 

 1-003474 

 1.003728 

 1.003988 

 1.004253 



0.999902 

 0.999894 

 0.999904 

 0.999922 



0-999955 

 1. 000000 

 1.000062 

 1. 000 1 36 

 1.000220 

 1.0003 15 

 1.00042 1 

 1.000537 

 1.000664 

 1. 00080 1 

 1.000948 

 1. 00 1 104 

 1. 001272 

 1. 00 1 449 

 1.001635 

 1. 00 1 83 1 

 1.002038 

 1.002250 

 1.002473 

 1.002705 

 1.002946 

 1.003 195 

 J-003453 

 1-003719 

 1-003993 

 1.004275 

 1.004565 



According to the observations previously descrihed 



17.°5 

 the specific gravity of sample I, was, at . , 1.02691, or, 



L i , O 



reduced to 



15_" 

 15 7 ' 



1.02707, and Ekman found the specific 

 15" 



gravity of sample D to be 1.02695 at 



15" 



Hence the re- 



sults, so far at least as these samples are concemed. very 

 well admit of being compared; satisfactory agreeinent exists 

 even for temperatures below 0°, since the difference does 

 not as a rule exceed 0.00001, and for the highest temper- 

 atures, at which it is greatest. it amounts to only 

 0.00002;") ; nav. these tigures may be still furtber reduced 

 by taking into account the s2Jecific gravities of the samples. 

 With the results of the above-mentioned observations in- 

 stituted by other chemists, those hero descrihed agree 

 but indifferently. According to the formula deduced by 



