222 Prof. B. Stewart and Mr. W. L. Carpenter. [Feb. 25, 





3S53588$g§$$S|SSg$2i§S228888SSgSgS8 : 



p 





H 









Period. 



++++++++++++++++++++++++++++++++ 



g 





P 

 Ph 





IS 





s 





Period. 



rH t-H rH rH rH rH iH fH t-l iH |H !-» . 



| | | | | | | | | | | II | 1 + + + + + + + + + + + + + + 



g 





Q 

 Ph 











a *sssaaaiass2 a §ssaiaaassa533aslss 



Period. 



II 1 1 II i 1 1 II 1 1 1 !• 1 1 1 1 1 1 i 1 1 J 1 J 1 1 1 1 1 1 



