442 



Mr. J. Hopps on the Alterations in the 



German-silver Wires. 



u... 



0... 



u... 



0... 

 IT... 



c... 

 it... 

 c. 



IT... 



c... 

 it.. 



0... 

 IT.. 



c... 



IT.. 

 0.. 

 IT.. 



0.. 



u.. 

 c. 



IT.. 

 C. 

 IT.. 



c. 



IT.. 

 C. 

 IT.. 

 C. 

 U.. 

 0.. 

 IT.. 

 0.. 

 IT.. 

 0.. 

 IT.. 



No. 4 (hard drawn). 



1st Series. 



Resist- 

 ance. 



1-53483 



25 



62 



12 



65 



13 



60 



05 



45 



02 



42 



03 



42 



05 



41 



00 



40 



00 



36 



00 



35 



1-53396 



434 



395 



434 



394 



423 



390 



421 



390 



425 



391 



425 



Differ- 

 ence. 



-•00058 

 + -00037 

 00050 

 + 00053 

 -00052 

 + -00047 

 -•00055 

 + 00040 



- 00043 

 + -00040 

 - -00039 

 + -00039 

 - -00037 

 + -00036 



- -00041 

 + •00040 

 -00040 

 + •00036 

 - -00036 

 + -00035 

 - -00039 

 + -00038 

 - -00039 

 + •00039 

 - -00040 

 + •00029 

 -'00033 

 + -00031 

 - -00031 

 + •00035 

 -•00034 

 + 00034 



Rested for 21 

 hours ; gained 

 •00116. 



2nd Series. 



Resist- 

 ance. 



1-53541 

 445 



552 



458 



545 



468 



556 



471 



530 



485 



524 



480 



518 



482 



516 



478 



501 



472 



499 



66 



85 



59 



80 



52 



73 



37 



62 



48 



62 



34 



58 



31 



52 



Differ- 

 ence. 



-•00096 

 + -00107 

 - -00094 

 + -00087 

 -.00077 

 + -00088 



- -00085 

 + -00059 

 -•00045 

 + •00039 



- -00044 

 + •00038 

 -•00036 

 + •00034 

 -•00038 

 + •00023 

 - -00029 

 + -00027 

 -•00033 

 + -00019 

 -•00026 

 + 00021 

 -•00028 

 + -00021 

 - -00036 

 + -00025 

 -•00014 

 + -00014 

 - -00028 

 + •00024 

 - -00027 

 + -00021 



Rested for 21 

 hours ; gained 

 •00109. 



No. 5 (annealed). 



1st Series. 



Resist- 

 ance. 



1-51821 

 982 

 963 

 981 

 980 

 980 

 980 

 992 

 992 

 988 

 1-52000 

 1994 

 2004 

 2000 

 2010 

 2003 

 2020 

 2010 

 2025 

 2014 

 2031 

 2021 

 2038 

 2027 

 2040 



Differ- 

 ence. 



+ •00161 

 - -00019 



+ -C0018 

 -•00001 



+•00012 



-•00004 

 + -00012 

 -•00006 

 + -00010 

 -•00004 

 +•00010 

 -•00007 

 + •0001 7 

 - -00010 

 + -00015 

 -•00011 

 + -00017 



-•onoio 



+ -00017 

 -•00011 

 + -00013 



Rested for 16 

 hours ; gained 

 •00110. 



2nd Series. 



Resist- 

 ance. 



1-52150 

 140 

 150 

 142 

 149 

 138 

 150 

 136 

 130 

 122 

 140 

 123 

 135 

 120 

 132 

 119 

 129 

 111 

 120 

 108 

 114 

 100 

 085 

 073 

 062 

 068 

 071 

 065 

 070 

 070 

 071 

 070 

 072 

 070 

 073 



Differ- 

 ence. 



-00010 

 + -00010 

 ■00008 

 + -0000 7 

 00011 

 + 00012 

 - -00014 

 + 00006 

 -•00008 

 + -00018 

 -•00017 

 + -00012 

 •00015 

 + -00012 

 •00013 

 •00010 

 •00018 

 + •00009 

 -•00012 

 + •00006 

 - -00014 

 + •00015 

 - -00012 

 + -00011 

 -•00006 

 + 00003 

 -•00006 

 + •00005 



+ •00001 

 - -00001 

 + •00002 

 - -00002 

 + -00003 



Rested for 26 

 hours ; gained 

 •00231. 



