102 The Irish NaiuraJist. June. 



lileration in technical terms (such as phylloniania, hracteomania) is also 

 observable, but the glossary provided at the beginning of the volume 

 will be found helpful. To the future, of course, belongs the study of 

 the causes of abnormalities and the degree of their inheritance — 

 physiological teratology — if we may so term it, but for the present Mr. 

 Worsdell's volumes certainly provide us with a succinct treatment of 

 the subject from the morphological standpoint. 



The present volume, like the former one, is abundantly illustrated. 

 One could have wished, however, that more of the figures had been 

 distributed through the text instead of being massed in the form of plates 

 at the end of the book. Some of the plates and figures are good, but 

 others can only be described as bad, such for instance as figs. 121 and 

 136 and Plate 45. 



It would appear as if a collection of technically good photographs 

 of plant malformations was sorely needed, and some of our clever field 

 naturalist photographers might do worse than specialise in this direction. 



G. H. P. 



THE DUBLIN DRIFT DEPOSITS. 



Geological Map of the City of Dublin Area. Drift Edition. 

 Surveyed in 1901 by A. McHenry. Published with minor Revisions 

 by Grenville A. J. Cole, Director. 191 7. Scale 6 inches to 

 the mile. Dublin : Ordnance Survey Office, Price 3s. 



This map may be heartily commended to inhabitants of Dublin 

 interested in the topography and geology of the city and neighbourhood. 

 The area represented extends from Glasnevin to Rathmines and from 

 Castleknock to Sandymount. By far the greater part of the surface 

 is covered with Boulder Clay, but the alluvium and gravels of the Liffey, 

 Tolka, Cummack and Dodder are conspicuous, and the old course of 

 the Poddle can be traced by remnants of alluvium along the now closely- 

 built district between St. Patrick's Cathedral, the Castle and Parliament 

 Street. The shore-line of the Liffey estuary marked on Sir Bernard dc 

 Gomme's map of 1673 is indicated, demonstrating the extensive reclaimed 

 area along the North and South Walls, and explaining the name of the 

 North Strand Road. The printing of the map is clear, although a trifle 

 heavy. It is five years since the Ordnance Survey published the map 

 on which the geological details have now been marked by the Geological 

 Survey, yet we are surprised to see the University College premises in 

 Earlsfort Terrace marked " Royal University," and the Royal College 

 of Science new building in Upper Merrion Street totally ignored although 

 completed in 191 1. 



G. H. C. 



