1). C. McIntosii 



Equatioii U> tlic curvo : 



/ n. \12.(lülS0 / „, \ 58.3705 



Tlic orii^iii of thc ciirve is Ihc liiode, ;uul Ük: tit is a tairly ymid (jiiu. 

 DiÄORAM II. Polygon of Frequency. 



471 



ISO 



;io 



1-26 2-26 3-26 4 25 5-25 6 26 7-25 8 26 9 26 10 26 1126 12 26 13 26 14 26 15-26 16 26 17 26 18 26 19 26 20-26 



Size of Diso. 



60—2 



