TYPICAL FORMS AND SPECIAL ENDS. 19 



not arise from design, is actually hostile to their argument. The authors 

 ought to have disposed of all such cases, by showing solid grounds of dis- 

 tinction between the instances of agreement which prove design, and those 

 which may exist without it. Instead of this course, required by fairness 

 and true logic, they have adduced both classes of facts, without discrimina- 

 tion ; and they content themselves with adding, in some few instances, a qua- 

 lification to the effect that they do not rely on them as conclusive or strong 

 examples. 



In conclusion, let us say, we shall be glad to see a second edition of this 

 work, as well for the sake of its intrinsic merits, which are far from being 

 inconsiderable, as on account of those defects which, by a little care, may be 

 removed, but which at present impair, not a little, the force of the general 

 argument which it was intended to develope. M. L. 



Elementary Course of Geology, Mineralogy, and Physical Geo- 

 graphy. By Professor David T. Ansted, M.A., &c. Second Edition. 

 London: Van Voorst, Paternoster Kow. 1856. 



This is the second edition of a Manual of Geological Science, which, on its 

 first appearance, was very well received by Geological students. There was 

 not much originality of thought or arrangement exhibited in it, but it was 

 extensive in its scope, embracing Physical Geography, Mineralogy, Geology 

 proper (or Descriptive), and the rudiments of Practical Geology. It was, 

 moreover, brought out in a form and at a price suited to students, and as 

 the compilation of its materials was generally well executed and mode- 

 rately accurate, it was considered, on the whole, a good book. One of 

 the highest testimonies to its practical value to the student is the fact, that 

 it has been in use for some years as one of the text books in Geology for 

 students in Experimental science in the University of Dublin. 



In the present edition the four-fold division of the subject is retained ; 

 the Physical Geography is unaltered ; the Mineralogy somewhat modified ; 

 the Geology recast as to its arrangement, not enlarged ; and the Practical 

 Geology is doubled in extent and greatly improved. A considerable portion 

 of the interval between the editions (six years) has been spent by Profes- 

 sor Ansted in a professional way, as Consulting Mining engineer, and in 

 connection with various mining companies ; occupations which have 

 afforded him means of increasing his knowledge both of Mining operations 

 and Mining terms. 



