nd that i Westchester County. It is noteworthy that the mor- in the other indicator will correspondingly rise. The tality from diphtheria in the maritime district is very upper end of each glass tube is adapted to be closed high and has been rising steadily during the last four by a lever valve,… … which it has been moved, with both bolts withdrawn educated concerning sanitary precautions and the dan- DARRAGH'S LEVELING DEVICE. or in their outermost position. ger of infections from various sources. float in each of the tubes plainly indicates the rise and »•»»« — fall of the liquid, there…
Patents · Munn · Plate · Quebracho · Scientific American · American supplement · Rear wheel · Plate glass · Express money · Years ago · Colonial style · Hand lever · Pivotally connected · Postal union
Internet Archive · Public domain (published before 1931). Free to use for anything.
