NARRATIVE OF THE CRUISE. 
951 
is 1 ‘026, which approximates to that of average ocean water. In the table, which is 
taken from Professor Dittmar’s Report, the first column t° gives the temperature, 
the second D ( the density at t° C., the third gives the value of the ratio = pyjyg 5 
and the fourth column gives the values of the reciprocal of 4>(t). The following 
examples will show the method of using this table. 
The density of a water is T02734 at 15 0- 56, what is it at 18°‘3 C. ? Answer: At 
15° '5 6 the water is heavier than the standard water quoted in the tables by 0 '00 134, 
hence at 18°‘3 it is heavier than the latter by 0'00134 x <£(z) = by table to O’OOlSd x 
Table II. 
Tempera- 
ture, 
°C. 
Density of Water. 
Tempera- 
ture, 
°C. 
Density of Water. 
A. 
B. 
C. 
A. 
B. 
C. 
0 
1-02713 
1-02818 
1-02923 
16 
1-02490 
1-02590 
1-02690 
1 
708 
813 
918 
17 
467 
567 
667 
2 
703 
807 
911 
18 
443 
542 
641 
3 
695 
799 
903 
19 
417 
516 
615 
4 
687 
790 
893 
20 
391 
490 
589 
5 
676 
779 
882 
21 
364 
463 
562 
6 
665 
768 
871 
22 
337 
436 
535 
7 
653 
755 
857 
23 
310 
408 
506 
8 
639 
741 
843 
24 
282 
380 
478 
9 
624 
726 
828 
25 
253 
351 
449 
10 
609 
710 
811 
26 
223 
321 
419 
11 
591 
692 
793 
27 
192 
290 
388 
12 
573 
674 
775 
28 
161 
259 
357 
13 
555 
654 
755 
29 
130 
227 
324 
14 
534 
634 
734 
30 
098 
195 
292 
15 
513 
613 
713 
31 
066 
163 
260 
15-56 
1-02500 
1-02600 
1-02700 
(narr. chall. exp. — vol. x. — 1885.) 
120 
