Changes of Curvature by Means of a Flexible Lath. 459 



by Propyl Alcohol : Apparent Error when examined by the 

 Method. 



Error = 0*033°. 



two Equations meeting at 



VII. 



16 

 per cent. 



-•001 

 + •015 

 - -006 

 -•032 

 +•020 

 + •004 

 + •003 

 -•010 

 + •020 

 -•032 

 +•039 

 -•020 



+ •101 

 -•099 



•017 

 1 



1 

 •017 



If 



VIII. 



18 

 per cent. 



+ •006 

 +•022 

 -•002 

 -•030 

 + •017 

 - 002 

 -•009 

 -023 

 + •007 

 -•037 

 + •057 

 + •042 

 -•047 



-•161 

 •160 



•025 



1 

 1 



•025 

 l-3t 



IX. 



2 

 per cent. 



-•005 

 + •012 

 -011 

 -•037 

 + 015 

 -•001 

 -•002 

 -•012 

 + •021 

 -018 

 + •073 

 + •045 

 -•070 

 -•012 



By one Equation from 



f 166 

 -468 



•024 

 1 

 1 



•024 

 l-3t 



6 to 20 

 per cent. 



+•102 

 + •035 

 -•004 

 -040 

 -024 

 -•072 

 +•034 

 +•030 

 -•063 

 + •002 



+ •203 

 -•203 



024 

 1-3 

 1-6 



•050 

 2:4t 



XI. 



7 to 22 

 per cent. 



o 



-•004 

 -011 

 -•025 



+ •005 

 -•035 

 +•062 

 +•042 

 -061 

 + •009 

 + •016 



+•136 

 -•134 



•027 

 1 

 1 



•027 

 l-2t 



figure when drawn as two curves meeting at about 14 per cent. (col. III.). 

 Equations, x~^p. 





p. 



a. 



b. 



c. 



d. 





12 to 30 



7-2697 



1-1693 



•028498 



-•0014221 





„ 16 





1-2751 



-•018061 



•0012061 





„ 18 





1-2886 



-•025409 



•0020310 





„ 20 





1-2742 



-•019249 



•0014920 





6 „ 20 



37774 



1-0815 



•023862 



-•0005630 





7 „ 22 



4-2854 



1-1792 



•000805 



•0012653 



