COVERING SAND DUNES ON THE SEA COAST. 181 



in the manner described on page 178, the other half is 

 to be worked after the old mode (see page 179), and ex- 

 poses to view the piles of brushwood set in a circle per- 

 pendicularly to the ground, in order that the shifting 

 sands may not cover them. 



The maritime pine {pinus maritima), which is of such 

 great importance to southern France, cannot be recom- 

 mended for similar operations in our State, as it requires 

 a warmer climate, such as that of California and the 

 southern Atlantic and Gulf States. If exposed to our 

 dry and cold winds, during the winter, this tree would 

 certainly perish. However, we have among our pines 

 some species which would fully accomplish upon our 

 dunes what the maritime pine has done in France, as, 

 for instance, the Jersey pine {pinns inops), the pitch 

 pine {pinus rigicla), the gray pine or scrub pine, and 

 the red cedar {junijjerus virginianus). For binding 

 the sand-dunes we have a great selection of grasses and 

 bushes, among which deserve special notice: beach- 

 grass {calamagrostis arenaria), myrtle bush {myrica 

 cerifera), and such small creeping vines as naturally 

 take root in the movable arid sand of our sea coast. 



