.\liII)I\(i ClTlKS 



i8i 



it lies a second layer, six inches thick, composed 

 entirely of roots ot heather and rootlets of fir-trees, 

 all carefully stripped clean of hark, and makinj^ a 

 dry foundation for the warm hillock of pine-needles. 



NO. 2. — A WOOn ANTS NESP. IMKKIOR; K(;(;s, CRUBS, AND 

 COCOONS, WITH WOKKKRs : NCAilKD IN IKNOI NC, IHKM. 



Below this woody layer, aj^ain, the ^r(nmd is tun- 

 nelled to an unknown depth by lon^ subterranean 

 i^alleries, driven rij^ht thiou^h a stratum of solid 

 sandstone. Tiiese inner galleries extend not only 



