^? 



Tu'o large Ammonites from the Holder ness Drift. 259 



its body whorl, it must have been very big indeed when com- 

 plete. The following are its dimensions : — 



Largest diameter . . . . . • 34^ rn"^- 



Width of outer whorl . . . . . . 140 



Height of outer whorl (keel to keel) . . 120 

 Greatest thickness of outer whorl . . 112 



Width of last whorl but one . . . . 76 



Width of same overlapped . . . . 30? 



Width of umbilicus . . . . . . 130 



The outer whorl is very different in section from that of 

 acceleratum. The flanks converge slightly so that the periphery 

 is much wider and also much flatter than in the last-named, 

 being traversed, however, by two distinct broad furrows and 

 a very low depressed keel, so low that it cannot be seen in the 

 figure. This specimen is also remarkable for the beautiful 

 display of its suture lines. 



The writer's thanks are more especially due to Mr. Sheppard 

 for bringing the above specimens to his notice ; to Mr. Crick, 

 for first introducing him to Hyatt's incomparable work ; and 

 to his colleague, Mr. H. A. Denham, for the excellent photo- 

 graphs. ♦♦ 



Pleasant Walks Round Halifax, by C. Crossland. Edward Mortimer, 

 Halifax. 1910., 52 pp. Price 6d.; cloth i/- 



Probably few know the ways and byways around Halifax so well as 

 does Mr. Crossland ; hence his 'Ten Country Rambles over Hill and through 

 Dean, in the Parish of Halifax, with Scraps of Local and Natural History,' 

 are written with a full knowledge of the subject. No words are wasted m 

 fine writing, and much is told in little space. Personally, we were a bit 

 surprised to find that there were such pleasant walks so near Halifax t 

 The book is a handy size for the pocket, neatly bound in cloth, and has ten 

 large scale maps illustrating the routes. 



The Geology of the Melton Mowbray District and South-East Nottingham- 

 shire, by Messrs. G. W. Lamplugh, W. Gibson, C. B. Wedd, R. L. Sherlock 

 and B. Smith, with notes by C. Fox-Strangways, has recently been issued 

 by the Geological Survey ' in explanation of Sheet 142 ' (118 pp. and plates). 

 The Melton Mowbray area is of particular interest to the geologist, as 

 shewn by the headings to the chapters, viz. :— General Description, Con- 

 cealed Carboniferous and Older Rocks, Trias, Lower Lias, Middle Lias,, 

 Upper Lias, Inferior Oolite, Glacial Deposits, Post-Glacial River Gravel 

 and Alluvium, Economic Geology, Borings and Sinkings, and Bibliography. 

 There is also a good index. Judging from the plates, there are several 

 excellent sections in the district covered by sheet 142. Whilst the memoir- 

 is of particular value to those ' interested ' in minerals, etc., the ' ordinary ' 

 geologist will perhaps find that part dealing with the more recent beds to be 

 the most readable. Each section of the memoir (in some cases each para- 

 graph) is initialled, so that there will be no difficulty in tracing the 

 authority for any statement made. The price is two shillings and three- 

 pence ; the odd coppers doubtless being for the paper cover, which is 

 rather better than the flimsy shaving-paper usually used by His Majesty's- 

 Stationery Office for ' binding ' the results of some of the best geological 

 work that has ever been accomplished. 



1910 July I. 



