Popular science monthly . d from it is rich antl fertile. large quantity of mica which it makes it easily carried by the also gives it great fertility when oncewatered, so that with the reclamation ofthe sand dunes there are possibilities ofcultivating profitable orchards and farmlands in connection with the belts offorest which will necessarily have to beestablished. Many dunes in the lower ColumbiaRiver valley are more thanthirt\-feet high,and several even more. The accompany-ing photographs illustrate some of theprolilems caused b\ the dunes. Rail-roads have spent thou
Popular science monthly . d from it is rich antl fertile. large quantity of mica which it makes it easily carried by the also gives it great fertility when oncewatered, so that with the reclamation ofthe sand dunes there are possibilities ofcultivating profitable orchards and farmlands in connection with the belts offorest which will necessarily have to beestablished. Many dunes in the lower ColumbiaRiver valley are more thanthirt\-feet high,and several even more. The accompany-ing photographs illustrate some of theprolilems caused b\ the dunes. Rail-roads have spent thousands of dollars inrough fences, known as hurdles, in aneffort to keep their tracks from beingsubmerged. Irrigation ditches havebeen moved from time to time to preventth?m from being filled with sand. 20-) Poptdar Science Monthly Device to Hold Covers on SleepingChild in Crib SEW a one-eighth-inch wire to outsidecover of bed—a spread or quilt orsheet. Sew a piece on each long sideand on the short side at the foot of the. The most restless baby cannot pull this coverletoff because it is securely fastened on both sides crib. Tie the wire with tape to the rodon the bedstead that parallels the rings can be put on the wireabout twelve inches apart if de-sired. To open covers, untie thetape. The other covers are held inposition simply by pinning themall to the top one in two places. s[)eefl it works best. It will do the workof about twenty men. The front end is taken up by thesweeper mechanism, located in front of apair of wheels, which, in turn are,practically speaking, in front of themotor-cycle proper. Both wheels andsweeper mechanism are fastened to themotor-cycle by means of an angle-ironframe, the operation of the wheels beingcontrolled by the handlebars. Thebrush, which is about sixty inches inlength, is immediately in front of thepair of wheels and is operated by a leverat the side of the driver, who, by pushingone of the levers forward raises or lowersthe brush
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
