appear that the arc light, as applied to street illumination, that the train or vehicle may be stopped in time, should the way to do a good job on this material was to make a collec- is expensive and even extravagant, that it is eminently desir- tion of toothed mills, and mill the scores instead of… … sparsely settled country. The Northwest- the year. Six and one-half of these lamps, WILLIAMS' DKAWBRIDGE SIGNAL. ern, Lumberman concludes that the rea- at $35 per year, cost the city $227.50 per son for this is that more care is taken annum. On the other hand, one electric ■with such trains; that…
Patents · Boiler · Patented · Scientific American · Water · Tempered glass · Sewing machine · Mould board · Cast Iron · Horse power · Yellow fever · American supplement · Electric light · Revolving book
Internet Archive · Public domain (published before 1931). Free to use for anything.
