Changes of Curvature by Means of a Flexible Lath. 455 



Propyl Alcohol : Apparent Errors when examined by the 

 Method. 



Error =-0215°.) 



two Equatior 



is meeting at 





When represented by one Equation from 





VII. 



VIII. 



IX. 



X. 



XI. 



XII. 





18 



20 



22 



10 to 22 



12 to 22 



12 to 20 





per cent. 



per cent. 



per cent. 



per cent. 



per cent. 



per cent. 





o 

 + 011 



+ •035 



o 



-017 











+ •029 



+ •057 















-021 



-•002 



-•033 











-•069 



-•071 



-•058 











+ •018 



-•006 



+ •051 



+•038 









-•013 



-•056 



+ •030 



-•088 



+ 009 



+ •011 





+ •035 



-•018 



+ ■067 



-•001 



-•043 



-•043 





+•082 



+ •036 



+ •072 



+•116 



+•072 



+ •059 





-•072 



-•088 



-•163 



-•036 



-•025 



-•037 







+ •115 



-•148 

 +•201 



-•062 

 +•033 



-•019 

 + •007 



+•009 





+ •175 



+ •243 



+ •421 



+ •187 



+•038 



+•079 





-•175 



-•241 



-•419 



-•187 



-•087 



-•080 





•039 



•048 



•075 



•053 



•029 



•032 





4-7 



8-0 



19 



9-1 



2-25 



1-95 





1 



445 



1-4 



1 



1 



1 





•183 



1710 



1-997 



•482 



•065 



•062 





lit 



95 1 



lilt 



21 1 



5-0 1 



4-5t 



figure when it is drawn as two curves meeting at 16 per cent. (col. III.) 

 point of the Equation is taken as its origin. 





p- 



a. 



b. 



c. 



d. 

 •001352 





Oto 18 





•6085 



•001909 





„ 20 





•64752 



•011618 



•002373 





„ 22 





•56452 



•019959 



-•000236 





10 „ 22 



3-2791 



•53400 



•13975 



-•015614 





12 „ 22 



40338 



•53333 



•20087 



-•028856 





12 „ 20 



40362 



•5440 



•18379 



- -024864 



