130 



A. L. Day and R. B. Sosman — 



perature along the bar. For convenience, the integration was 

 made in terms of microvolts instead of degrees. The sixth 

 and seventh columns contain the temperatures corresponding 



Table V. — Observations of Expansion Coefficient, /3. 





Thermoelements 



Temperature 



Expansion 

 from 0° 



Date 















1 









W 



Z 



Wcor. 



Z cor. 



by W 



by Z 



Mean 



mm on 

 500 mm 



10 6 £ 



1908 





















Sept. 21 



2261 



2251 



2312 



2298 



301-4° 



301-4° 



301-4° 



1-404 



9-32 



3197 



3187 



3273 



3258 



404-6 



405-4 



405-0 



1-912 



9-44 





4169 



4153 



4257 



4237 



506-0 



507-1 



506-6 



2-434 



9-61 





5157 



5140 



5237 



5212 



603-9 



605-1 



604-5 



2-950 



9-76 





6197 



6178 



6286 



6262 



705-4 



707-2 



706-3 



3-500 



9-91 





7264 



7238 



7362 



7333 



806-2 



807-8 



807-0 



4-064 



10-07 





8361 



8335 



8457 



8420 



905-9 



906-7 



906-3 



4-640 



10-24 





9509 



9470 



9599 



9552 



1006-9 



1006-8 



1006-8 



5-241 



10-41 





10662 



10611 



10733 



10675 



1104-5 



1103-4 



1104-0 



5-828 



10-56 





11963 



11896 



12018 



11921 



1215-3 



1210-2 



1212-8 



6-469 



10-67 



Sept, 25 



1817 



1801 



1848 



1831 



248-7 



248-4 



248-6 



1-154 



.9-28 





2756 



2735 



2791 



2768 



353-4 



352-9 



353 2 



1-666 



9-43 





3699 



3674 



3726 



3702 



451-8 



452-0 



451-9 



2-158 



9-55 





4686 



4655 



4691 



4662 



549-7 



550-3 



550-0 



2-668 



9-70 





5711 



5679 



5691 



5660 



648-2 



649-2 



643-7 



3-191 



9-84 





6820 



6788 



6772 



6742 



751-2 



752-6 



751-9 



3-757 



9-99 





7847 



7813 



7754 



7720 



842-2 



843-2 



842-7 



4-262 



10-11 





8980 



8945 



8845 



8809 



940-8 



941-4 



941-1 



4-827 



10-26 





10140 



10102 



9939 



9901 



1036-4 



1037-0 



1036-8 



5-403 



10-42 





11368 



11327 



11109 



11063 



1136-9 



1136-4 



1136-7 



6-012 



10-58 



Oct. 3 



2291 



2272 



2302 



2283 



300-3 



299-8 



300-1 



1-384 



9-22 





3228 



3205 



3250 



3228 



402-2 



402-2 



402-2 



1-899 



9-44 





4208 



4181 



4243 



4215 



504 6 



504-9 



504-8 



2-432 



9-63 





5205 



5175 



5247 



5216 



604-8 



605-5 



605-2 



2-964 



9-79 





6238 



6206 



6281 



6249 



704-9 



705-9 



705-4 



3-511 



9-95 





7297 



7263 



7342 



7309 



804-4 



805-5 



805-0 



4-069 



10-11 





8401 



8365 



8446 



8408 



904-9 



905-6 



905-3 



4-644 



10-26 





9536 



9497 



9576 



9534 



1004-9 



1005-2 



1005-1 



5-231 



10-41 





10675 



10647 



10710 



10670 



1102-6 



1103-0 



1102-8 



5-830 



10-57 





11884 



11857 



11926 



11875 



1207-5 



1206-2 



1206-8 



6-466 



10-71 



Oct. 29 



8419 



8377 



8366 



8324 



897-4 



898-0 



897-7 



4-618 



10-29 





9551 



9507 



9436 



9392 



992-6 



992-8 



992-7 



5-169 



10-41 





10706 



10663 



10539 



10496 



1088-0 



1088-2 



1088-1 



5-752 



10-57 





11884 



11849 



11786 



11751 



1195-6 



1195-7 



1195-7 



6-401 



10-70 





13137 



13104 



13134 



13101 



1309-9 



1309-8 



1309-9 



7-154 



10-92 



1909 



W 



D 



Wcor. 



D cor. 



by W 



by D 









Oct. 13 



2304 



2301 



2235 



2232 



293-0 



293-0 



293-0 



1-352 



9-23 





6222 



6217 



6180 



6175 



695-2 



695-9 



695-6 



3-452 



9-92 





9501 



9494 



9493 



9486 



997-6 



998-1 



997-9 



5-190 



10-40 



Oct. 14 



9540 



9536 



9542 



9544 



1001-9 



1003-1 



1002-5 



5-200 



10-37 





10666 



10663 



10690 



10691 



1101-9 



1102-5 



1102-2 



5-811 



10-54 





11839 



11836 



11783 



11783 



1195-4 



1195-7 



1195-6 



6-410 



10-72 





12998 



12993 



13121 



13120 



1308-9 



1308-6 



1308-8 



7-156 



10-93 





14183 



14170 



14390 



14372 



1413-4 



1411-6 



1412-5 



7-832 



11-09 



