510 



THE PARKS AND GARDENS OF PARIS. [Chap. XXX. 



These caves not only supply the wants of Paris, but greatly 

 those of England and other countries, large quantities of preserved 

 Mushrooms being exported, one house alone sending to our own 

 country no less than 14,000 boxes annually. To traverse the 

 passages any further is needless — there is nothing to be seen but 



Plan of large Subterranean Quarry at Fortes Terres, FripUlon. S, S, S^ represent the plan 

 of the bases of the huge supporting pillars, and ike dotted lines their union with the roof. 

 D, C, shows the line of the section shown in the following cut, and P, place for preparing 

 the plaster, 



a repetition of the culture above described, every available inch 

 of the cave being occupied. We find our way to the bottom of 

 the shaft, carefully mount the rather shaky pole one by one, and 

 are glad to find ourselves in the hot sun in the midst of the 

 ripe Wheat. In traversing the fields, two things relating to 



