Plate 15 



10 (Iranite 



GrinfisLonc; isl.'UKl, [(^(Tcrsoi) co. N. Y. 



43 550° slow coolinj^ 44 550" I'asl coolinj^ 



45 XSo''' sl(;w cooliiij^ 42 H5o° fast coolinj^ 



163 Flarru; t.osl, r30 Flame and wat,er U;sL 



