Skala-Værdi. 
dl 
Scale-Value. 
: Buch. Piezom. = 14. | Te 
Datum. Sted. Antal | Normalther. we AGE | Diff. | Seat, Diff 
atlæst. beregn. bereg. | ; 
(Date.) (Locality.) Obs. _|(Stand-Therm.)|  (read.) (comp.) aye) (Cone) | © -B. 
a. b. | 
mm. mm, mm. 
1877. Juli 10. Tromsø. 3 30.32 214.03 215.24 — 0.31 | 3°42. | — 09.10 
EN se te % I © Gå 205.00 205.00 .00 | 6.73 | + I 
Aug. 5. |I Søen (At Sea). I 4 .90 210.60 210.50 ++ .10 | 4.87 |+ 3 
» 17. | Salten Fjord. I 10.70 | 193.20 193.10 + .10 | 10.67 | + 3 
| | | 
25°.66 823.73 mm. MIN = oP 128 mi, = se COLON: 
å XX 2252 = 90080 
— 77.07 @ = —3.0035 
225.2 — a 
t= ' 
3.0035 
En Grad Celsius svarer til 3 mm. ‘Til den prak- 
tiske Beregning construerede jeg en grafisk Tabel, der 
giver Temperaturen t med Argument Piezometeraflæsning a. 
Hr. Buchanan havde opgivet Tryk-Correction for Kvik- 
sølvpiezometret til 0.417 mm. pr. 100 Favnes Vandtryk, 
og Værdien af en Grad til 3.02 mm. Dette svarer til 
en Trykcorrection af 19.881 per 1000 Fayne. Efterat 
jeg ved Sammenligningerne paa Dybet i 1878 mellem Ne- 
gretti & Zambra's Vendethermometre og Miller-Casella- 
Thermometrene havde, som ovenfor vist, faaet bestemt de 
sidstes Tryk-Correctioner, kunde jeg benytte de paa samme 
Dyb gjorte samtidige Registreringer af Miller-Casella-Thermo- 
metrene og Kviksølvpiezometret til at verificere dettes Tryk- 
correction. Disse Registreringer staa i den følgende Tabel. 
One degree Celsius corresponds to 3 mm. For prac- 
computation, I constructed a diagrammatic table, 
in which the temperature, t, is given with the piezometer- 
reading, a, as argument. 
tical 
Mr. Buchanan had given the pressure-correction for 
his Mercury-Piezometer at 0.417 mm. per 100 fathoms 
water-pressure, and the value of a degree at 3.02 mm. 
This corresponds to a pressure-correction of 19.381 per 
1000 fathoms. After having, on the cruise of 1878, by 
comparisons in the deep between Negretti & Zambra’s 
inverting-thermometers and the Miller-Casella instruments, 
determined the pressure-corrections of the latter, I could 
use the registrings of the Miller-Casella thermometers and 
of the Mercury-Piezometer, made simultaneously at the 
same depth, to verify the pressure-correction of the lat- 
ter. These registrings are given in the following Table. 
Stevia Dybde. | Therm. Kv-piez. Tryk-Corr. Tryk-Corr. Diff 
å (Depth.) | IL. (Mere-Piez.) (Pressurc-Corr.) | (Pressure-Corr.) 
No. Dare. | Glas, B. for | ber. (0) 38 
(Lathoms.) | B. (comp.) 
96 | 805 — 17.14 == 2036 + 10.12 + 10.13 NE o°.01 
07 683 | = Bot -- 2.10 | 0.07 0.96 — I 
98 388 | = 6499) — 1 .52 O 3 0 .55 — 2 
129 709 | <= å ote | — 2.10 0.02 | I .00 = 8 
171 642 — I .02 | — 1.78 0.76 0 .90 = 14 
176 536 | —= 038 — 0.94 0 .66 0.75 — 9 
179 1607 — 1.17 — 3.55 2 XS 2.28 +. 10 
184 1547 — 8 Bit — § BS 2 +34 2 .19 5 
213 1760 — I .19 — 3.71 | 2 52 249 | Sr 3 
218 968 — 1 .36 — 2 .66 | i o3O 13 One | 6 
219 796 — 1.24 — 2 .28 I .04 tone | = 8 
1044 I 149,54 fø = + 0.001393 
