i892. 



NOTES AND COMMENTS. 169 



We understand that Mr. W. H. Hudleston, F.R.S., has in the 

 press a " Catalogue of the Gasteropoda of the Inferior Oohte 

 Formation." It will be modelled on Morris's " Catalogue of British 

 Fossils," published in 1854. The mention of Morris's Catalogue 

 reminds us of a Committee that was formed at the author's death to 

 perpetuate his memory by publishing a new edition of this well- 

 known work. The labours of that Committee will be considerably 

 reduced if they remain in obscurity much longer, for the vertebrata 

 were some time ago taken off their hands, and soon they will be 

 relieved of part of the invertebrata. 



A " Sketch History of Marlborough in Neolithic Times " (read 

 before the Toynbee Hall Natural History Society, on their visit in 

 1891) has just been issued by Mr. F. J. Bennett. Referring to the 

 lynchets or cultivation-terraces met with on the White Horse Hill, 

 also near Collingbourn and Lambourn, he expresses his agreement 

 with Mr. Gomme that they were formed independently of the plough, 

 and, indeed, before its invention. He cites instances where the 

 lynchets must have been cut out of the hill sides, the retaining-walls 

 having been faced with flints or sarsen stones. 



Notes on the rock-fragments that occur in the Permian Breccia 

 of Leicestershire are communicated by Professor T. G. Bonney to 

 the Midland Naturalist for February and March. The specimens, 

 which were collected by Mr. W. S. Gresley, include, as might be 

 expected, many of the Charnwood rocks, but in addition to the frag- 

 ments from these old and possibly pre-Cambrian formations, there are 

 some from the Carboniferous Limestone and (probably) Millstone 

 Grit, and many from the Coal-measures. The evidence afforded by 

 these rock-fragments of unconformity between the Coal-measures 

 and Permian strata, confirms and supplements that obtained by Mr. 

 Horace T, Brown and published by the Geological Society in i88g. 

 Certain striated fragments have been found in the Breccia. These, 

 in Professor Bonney's opinion, might in some cases have been scored 

 by other rock-fragments; but in no instance is he convinced that ice- 

 action had any connection with the phenomena. Nevertheless, 

 referring to the general characters of the accumulation and to certain 

 boulders that have been found in the Permian beds at Coton Park, 

 he admits that if we are unconvinced by the striae, the general 

 evidence of the breccias of this Leicestershire district seems favour- 

 able to the idea that a rather low temperature prevailed in Permian 

 times. 



The subject of Mean or Average Rainfall was brought before 

 the Institute of Civil Engineers on March 22 by Mr. A. R. Binnie. 



