144 Proceedings of Royal Society of Edinhiorgh. [sess. 
100® 
Obs. 
Calc. 
Sodium Chloride — 
17-6 1-1 
0*00428 
0*00431 
13-4 
472 
470 
8-8 
524 
519 
3-9 
594 
585 
Magnesium Sulphate — 
16*06 1*0 
450 
457 
10*51 
510 
510 
6*23 
555 
559 
Ammonium Sulphate — 
18*96 0*77 
475 
470 
10*17 
542 
540 
5*5 
575 
580 
Potassium Ferrocyanide — 
16*4 0*62 
512 
513 
10*4 
554 
556 
5*0 
605 
602 
Barium Chloride — 
16*0 0*52 
530 
534 
10*0 
573 
573 
4*8 
612 
611 
Potassium Iodide — 
17*01 0*29 
576 
576 
10*25 
602 
603 
4*5 
627 
629 
As stated in my previous note, my formula agrees extremely well 
with the recent determinations of Amagat, of compression of water 
up to 3000 atmospheres. But the values of A and B which I 
deduced from them (especially about 12° C.) are somewhat larger 
than mine, though they bear to one another nearly the same ratio. 
If I had used his value of B, the coincidences above would not 
have been sensibly impaired, but the values of s would have come 
out a little greater. 
