400 



PROFESSOR 0. MICHIE SMITH ON OBSERVATIONS ON 



APPENDIX A. 





1 

 1 



Electrometer. 





Date. 



Hour. 



Wind. 







Remarks. 





Positive. 



Neg. 









( 



28 





Sept. 3 



1.10 P. 



Lt. S x W. 



'I 



to 

 17 





>) 



2.45 



Do. 



6 

 ( 



136 



) 



1 Sept. 4 



10.5 a. 



Fr. S.W. 



-1 



to 

 44 



> On roof. 





(10.10 ) 

 \ to 



Do. 



•4 



299 

 460 



/Ground — wind in gusts with much dust flying; 





(10.17 j 





i 



425 



t bright sun. 



»> 









182 



When wind light, R. B. 2. 



>j 



Noon 



Do! 





67 



Very fine and bright. 



» 



1.10 p. 



Lt. S.W. 





11 



Ground. 



>J 



3.0 



Lt. E'ly. 



35 





Do. 



>) 



6.30 





5 





Do. 



Sept. 5 



5.50 a. 



Lt. W'ly. 



5 





Roof — clear. 



yi 



9.0 



Fr. S.W. 





2 



Ground — bright. 



)) 









Trace. 



Roof. 



)> 



10.0 



Do. 



( 



72 

 86 



Do. 



)) 







- 



to 

 122 

 325 



>■ Ground — dust flying. 

 >- Wind gusty. 



)> 



11.5 



Do. 



...j 



to 









( 



368 



ij 









40 



Calm. 



>) 



1.5 p. 



Lt. S.W. 





20 





i> 



2.5 



Do. 





35 



Cloudy. 



)! 



2.10 







1 



Roof — wind going round to S. E. 



)) 



3.15 



Very light. 



12 





Ground. 



)) 



5.0 



Fr. S x E. 



10 







Cloudy. 



>) 



6.20 



Do. 



29 







12 feet above ground — thin clouds. 



)) 



10.10 



Light. 



2 







Do. — starry, with light clouds. 



Sept. G 



6.0 a. 



light W. 



5 







> Do. — cloudy. 



>) 



8.0 





11 







» 



9.0 





7 







j? 



9.45 a. 



Lt. W. x S. 





74 



Ground — cloudy. 



H 



f 10.5 ) 

 \ 10.10 / 



Do. 



1 



188 



to 



432 



>Do. — just before slight dust^cloud. 



)> 









18 



Steady. 



>) 



1.10 p. 



Do! 





24 







to < 

 ! 2.10 j 





I 



67 



45 



125 



106 



From window about 40 feet high — dust-storm, 



51 



Do. 



1 



and a few drops of rain, followed by heavy 

 rain. 





2.20 



Lt. W'ly. 





560 



j Roof — rain ceased. This was followed by one 











clap of thunder. R. B. 8. 



!' 



4.20 



S.W. 



10 





Roof — followed almost immediately by a shower. 



1) 



6.15 Fr. S. 



1 



31 





Steady — dry. 



