268 BOARD OF AGRICULTURE. [Pub.Doc. 



retaining walls from the swelling of clay by frost. The next 

 picture is no fancy sketch. It fairly represents parts of the 

 "elevated" road between Hartford and East Hartford, 

 Conn., and is equally a criticism on the engineering of 

 either side or end of the Connecticut River : — 



cL^frtjrvL^Vr^^e*. &c£Z-ce*<* 9r*o/<£ >f^&f. 



The above instance is fully noticed in "A Move for Better 

 Roads" (H. C. Baird & Co., Philadelphia), pages 111 and 

 112, and a remedy is suggested: "In this case sand is 

 cheap and convenient, while stone must be brought long 

 distances. What else can we do but plant a rock crusher on 

 that causeway, lift the stones and break them fine enough to 

 fill their own crevices, bedding them solid and rain-tight on 

 sand enough to keep the clay still ? " 



Coal ashes have been tried on that road since the quoted 

 paragraph was written. Doubtless the trial was not thorough, 

 for the mud continues to come up smiling in traveller-' 

 faces. 



On long stretches of loamy land, hastily rounded up, 

 without thorough drainage, to receive a coat of conventional 

 " macadam," we see the same old foolishness working, as 

 may be well shown in a couple of sketches, such as should 

 appear on every common school black-board right away. 



