. Bulletin . 14 hr. | om\ <i « 20. o eoo <?oo goo eoo /ooo /eoo &oo /goo /aoo eooo Jbba/ IMP of P/ont Flgf. 5. 10 hr. per day, 310 days per year, 11,000 B. T. r. coal, 100% factor. <?* I o ?-^^. 3 ?? • i ; j ? •>---•-----:--- o eoo <?oo goo aoo /ooo /eoo /<zoo /goo /aoo eooo 7bto/ I HP or PJont Fig. 6. 10 hr. per day, 310 days per year, 11,000 B. T. U. coal, 75%load factor. \ 04

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectenginee, bookyear1901