Sawdust In Mortar

One ol the Ltermnn scientists roeommemls tho use oí' smvdust in mortur ivs superior t hair in preveuting cracking and pooling olïuuder the action ot' storms and trost. His own house, exposed to prolongoil Htorms on the seaoonst, had pntohes of mortar to be renewed cncli sprinn;, and, after tryiug without elïoot. a nuuiler of substïinces to prevent it, lie ('mimi sawdviat perfectly satiafaotoiy. It was iirst Üiorougbly dried and sifted throujh an ordinary grain sieve to remove the largei partioleB. The mortar wm made lv iuíxíhh; one part of cement, bwo of limo, two of Bawdnst and flve of sharp Band, Öie Hiiwilust loing first well mixed dry witli the cement and sand.