i873-] Notices of Books. 127 



The book which we have to notice is of French origin, from 

 the pen of the celebrated Guillemin ; its appearance in England 

 is due to the united labours of Mrs. and Mr. Norman Lockyer. 

 We need but say that it contains all the information of other 

 works on Physical Science, under the heads of Gravity, Sound, 

 Heat, Electricity, and Light, and that this information is further 

 aided by the most eloquent and vivid illustrations we should 

 think the power of the artist could attain." 



A Treatise on the Building and Ornamental Stones of Great 

 Britain and Foreign Countries. By Edward Hull, M.A., 

 F.R.S., Director of the Geological Survey of Ireland, Pro- 

 fessor of Geology in the Royal College of Science, Dublin. 

 London : Macmillan and Co. 1872. 

 Those interested in the geological distribution and mineral cha- 

 racter of the building and ornamental stones employed in the 

 erection of ancient and modern structures will be pleased to find 

 that the materials, which have hitherto been scattered so widely, 

 have been brought within the limits of a single volume. 

 Building and ornamental stones have not, we believe, been 

 described in a complete manner, nor with any particular scientific 

 arrangement. The engineer or student in Ireland is better pro- 

 vided for by Mr. G. Wilkinson's " Ancient Architecture and 

 Practical Geology of Ireland ; in France, M. T. Chateau has 

 published his " Technologie du Batiment." 



Under the general divisions of granitic, porphyritic, greenstone, 

 and serpentinous rocks, marbles, alabasters, the rarer ornamental 

 stones, calcareous and siliceous stones, tufaceous stone and 

 slates, Mr. Hull deals with the varieties found in different parts 

 of the world, in a manner clear, concise, but sufficiently detailed. 

 One of the concluding chapters, on the selection of building 

 stones with special regard to climate and the nature of the at- 

 mosphere, is well worthy the attention of the practical engineer. 

 In each and all its departments the work is a valuable addition 

 to our engineering literature. 



Life of Richard Trevithick, with an Account of his Inventions. 



By Francis Trevithick, C.E. Vol. II. London : E. and 



F. N. Spon. 1872. 

 The fertility of Trevithick's inventive powers appears to even 

 greater advantage in this second volume than in the first, which 

 we recently had occasion to notice. Although so many of Trevi- 

 thick's ideas have been superseded by later inventions, there are 

 several schemes which in the present day would afford valuable 

 application. The engineering student should read the work as a 



