108 A POPULAR EXPOSITION OF THE 



draw conclusions respecting disputed points in the theory of morals, 

 but I have already gone as far as my present purpose requires, and 

 must submit these speculations to your candid judgment. The Sen- 

 sationalist Philosophy has not of late years had any fair chance of 

 being examined, with a proper appreciation of its evidence, by stu- 

 dents of this branch of science, because the most opposite doctrines 

 have prevailed in the schools, and those who have undertaken to give 

 general information, saving the trouble of consulting the original 

 writers, have, writing in the spirit of an opposed system, and viewing 

 everything in its light, grossly perverted and misrepresented both the 

 evidence and the tendency of our views. I entertain a strong confi- 

 dence that this state of things will in the progress of time remedy 

 itself. Some free spirits will find their way to the sources of infor- 

 mation. Arbitrary assumptions and bold assertions will not always be 

 submissively accepted. The plan of declaring that to be simple 

 which we have not taken the pains or possessed the ingenuity to 

 analyse, will not always be accepted as satisfactory . The philosophy 

 of mind is as truly as any other an inductive science, but in its earlier 

 stages of progr^ess (and it is naturally a science of slow growth) it ia 

 peculiarly liable to suffer from false theories, and the influence acci- 

 dentally acquired by the Scotch and German Schools has for a time 

 almost overborne opposition to their dogmas. I am content to record 

 the results of my own inquiries, and to leave it to the future to decide 

 on the real merits of antagonistic systems. 



A POPULAE EXPOSITION OF THE MINERALS AND 

 GEOLOGY OF CANADA. 



BY E. J. CHAPMAN, 



PEOFBSSOE OS MINEEAiOGY ANP GEOLOGY IN TJN1VEE8IXY COIiEGB, TOEONTO. 



PART IV. 



( Continued from Vol. VL 'gage 518.J 



Molluscous Animals. — The forms of the sub-kingdom Mollusca 

 may be arranged under the following groups and classes : — A. Coralli- 

 form Mollusca : 1, Bryozoa. B. Acephalous {or headless) MoUusca: 

 2, TuNiCATA, (no fossil representatives) ; 3, Brachiopoda; 4, La- 

 mellibranchiata. C. Encephalous Mollusca : 5, Pteropoda ; 

 6, Heteropoda ; 7, Gasteropoda ; 8, Cephalopoda. 



