300 Tas_Le No. [X.—Cast Iron, in presence of Zinc z 
Table of Experiments on the Amount of Action of Sea Water on Cast Iron 
these Metals, all exposing equal surfaces. ‘ 
Exposed Surface of Zinc, Copper or Alloy, = 1:99 square inch. 
) ee tS Or, HS BRS eT SOE ee eee 
Fs Weight of . 
SB | Atomic Constitution | Specific Gra-| Atomic | | Weight of | pieceatter | Total 
S% | ofAlloy. —— [eityof Aloy.| WEY OF Ro tmmersion, ,ammnersion | Weight 
a | 
Le Cu 8-667 316 504-90 504-84 0-06 5 
2. Zn + 10 Cu 8°605 348°3 576°70 576°64 0:06 
3. Zn+ 9Cu 8°607 316-7 555°99 55593 0-06 
4. Zn+ 8Cu 8°633 285:1 560:17 560°13 0:04 
5. Zn+ 7Cu 8587 253°4 530°86 530°85 0-01 
6. Zn+ 6Cu 8-591 221:9 556°20 556°20 0-00 
vp Zn+ 5Cu 8-415 190°3 499-10 498°72 0:38 
8. Zn+ 4Cu 8-488 1587 507:24 507-22 0:02 
9. Zn+ 3Cu 8°397 1271 468°36 468°30 0:06 
10. Zn+ 2Cu 8-299 95°5 497°33 497:33 0:00 
11. Zu+ Cu 8-230 63°9 491°57 491°57 0:00 
12. 2Zn+ Cu 8-283 96:2 482:24 482-14 0-10 
13. 17Zn+ 8Cu 7721 801-9 349-09 348-92 017 : 
14, 18Zn+ 8Cu 7836 834:2 387°40 38634 1:06 
15. 19Zn+ 8Cu 8-019 866°5 350°50 350713 0:37 
16. 20Zn+ 8Cu 7603 898°8 391-70 391-14 0:56 
17. 21Zn+ 8Cu 8-058 9311 353°80 353°14 0-66 
18. 22Zn+ 8Cu 7882 963°4 334-08 33392 0:56 
19. 23Zn-+ 8Cu 7-443 995°7 356-24 355°73 051 
20. 3Zn+ Cu 7449 128°5 428:27 426-46 1:81 
21. 4Zn+ Cu 7371 160°8 440°39 438-90 1-49 
22. 5Zn+ Cu 6605 193-1 420:26 418-40 1:86 
23. Zn 6°895 32°3 425°85 422-90 2°95 
24, Fe 7138 vee see one aie 
Tasie No. X.—Cast Iron, in presence of Tin and 
Exposed Surface of Alloys = 1-99 square inch. 
Table of Experiments on the Amount of Action of Sea Water on Cast Iron 
these Metals, all exposing equal Surfaces. 
r= 5 ee . Weight of 
=o c sevens Specific Atomic Weight of . Total 
Se Atomic Constitution} (Gravity of | Weight o naan _ Piece after | 7, 
get aie ATy of | Weight of piece previouslimersion forlwwareet,| 
io] - 
1. : Cu 8-667 31°6 498-25 498°23 02 ‘ 
Dy Sn + 10 Cu 8-561 “3749 55110 551°10 ‘00 P 4 
3. Sn+ 9Cu 8162 343°3 511-10 51104 06 
4, Sn+ 8Cu 8-459 311:7 501-76 501:°76 00 
5, Sn+ 7Cu 8-728 2801 529°79 529°75 04 
6. Sn+ 6Cu 8-750 248°5 51500 514:96 04 
fs Sn+ 5Cu 8:575 216-9 556°27 556711 06 ; 
8. Sn + 4Cu 8-400 185°3 518°36 518°34 “02 ‘ 
9. Sn+ 3Cu 8-539 153°7 474:39 474-20 “09 
10. Sn+ 2Cu 8-416 122-1 528-20 528°10 00 F, 
11. Sn + Cu 8-056 90:5 480-03 479°93 00 t 
12. 2 Sn + Cu 7387 149-4 | 492-29 492:23 06 4 
13 3 Sn + Cu 7447 2083 | 454-88 454°88 “00 
14 4 Sn + Cu 7-472 267°2 457-75 457°72 03 
15 5Sn-+ Cu | 7:742 326-1 448-21 448-20 01 
16 Sn 7:291 58-9 41580 415°74 06 
17 Fe. 71858 aw Be pay i) 
| tet 
