338 



Mr. J. W. Gilford. 



[May 7, 



Appendix I. 



Details of an Observation as a Specimen. 



October 28, 1900. Zeiss Fluor Prism, 3 sides. Temp. 59° F. 

 W.L. 6563-0 C. (Ha). 



Left of 



prism. 





31 



30 



36-25 



Right of prism. 





31 



31 





0-5x 



left burr 



328 



29 



45-25 



«(o°) 





30 





35 -25 



mean 





29 



22 -75 







30 





21 -25 x 



right burr 





29 



9-25 











31 



28 



5-125 









101 



28 





25 -0 





88 



32 



11 -25 







28 





O'O 







ol 



AO 







27 





41-75 







31 



31 -75 











31 



30 



4-0 









0^71 



Z/ 1 



30 





16 -0 x 





208 



30 



11 '0 x 







29 





54 -75 







on 



4b /O 







29 





43 -5 







29 



32-0 









A. 



31 



29 



35 -125 















31 



28 



8 '75 









ol 



28 





39 -0 





328 



oZ 





/3(0°) 





28 





12 -25 







31 



54 75 







27 





52 -25 







OX 



31 *5 











31 



29 



56 -625 









151 







1 -s 





oo 



30 



19 -5 



7 (120°) 





9Q 





*±i u 







29 



53 -75 











36 "25 







29 



O 1 i o 











31 



30 



43 -0 









271 



ou 





CO .K v 



OO o x 





ZUo 



29 



34 



a (240°) 





ou 





36 '25 







29 



10 -25 







ou 





9K> >as v 







28 



55 -0 









B. 



31 



29 



36 125 















31 



29 



59-0 









31 



30 





17 'Ox 





328 



30 



19-25 



7(0°) 





29 





53 -25 







29 



55 -25 





29 





39 -5 







29 



41 -25 











31 



30 



37 -875 









151 



30 





51 -5x 





88 



29 



40-5 



a (120°) 





30 





30 -25 







29 



14-5 







30 





20 -Ox 







28 



57 -25 











31 



28 



15-25 







