Kcmidll : Scottish Rocl^s in Etist Yorkshire. 71 



originaliiii^- from CieortVev Saint Hilaire, elaborated b_\- IJlasius, 

 ' and copied from him hv every succeeding- writer, apparently 

 without the slightest attempt at verification.' Hy watching^ the 

 erection oi these structures from day to day Mr. Adams is of 

 opinion that the galleries in the mounds are the natural, 

 incidental, and inevitable outcome of the work i:^^ excavating^ 



Fig. I. Fig. 2. 



Plan of Complicated Fortress, with Elevation showing- Spiral Gallery 



several Blind Terminals. a- and Blind Terminals. 



Apex of tunnels, b, r, r/= Out- 

 lets, e, f— Bolt-runs. \ — \est. 



the nest-cavity and piling- up the superincumbent mound. The 

 two fig-ures, kindly lent by the Council of the Manchester 

 Societv, represent a plan and elevation of one of the mounds, 

 and exhibit the internal structure. Several similar illustrations 

 accompany Mr. .Adams' notes. The latter part of the 'Memoir' 

 is devoted to ' Sexual Characteristics,' ' Enemies of the Mole,' 

 ' Can the Mole See ? ' etc. 



GEOLOGY. 



Scottish Rocks in East Yorkshire. — The geolog^ical excur- 

 sion to Kelsey Hill and Burstwick, after the annual meeting- of 

 the Yorkshire Naturalists' Union at Hull, was a great success, 

 and several new and important facts were broug^ht to lig-ht. 

 Five or six boulders of the Trachytic rocks of South-eastern 

 Scotland were found. This is the first record of the occurrence 

 of these interesting^ rocks in Eng-Iand. — Percv F. Kendall, 

 2ist December 1902. 



1903 March 2. 



