16 



follows an account of the canal- systems and skeleton- systems, 

 reproduction, distribution and position in the Animal King- 

 dom, this heing not with the Protozoa but with the much 

 higher Coelenterata. 



The second volume comprises the arrangement, which 

 very curiously is on two systems, a natural and an artificial, 

 each with difierent sets of genera, but which we are to adopt 

 in naming the animals is not apparent. 



The third volume is occupied by fifty-five superb plates 

 and their descriptions, and the work must be miiversally 

 regarded as one of the finest contributions to our knowledge 

 of this group that has yet appeared. 



I would also point out as worth your study. Dr. Petti- 

 grew' s " Lectures on the Physiology of the Circulation in 

 Plants, the Lower Animals and in Man," in which he clearly 

 shows that the forces engaged are the same throughout, and 

 corresponding to certain physical forces existing in the in- 

 organic world; that living plants and animals, and their 

 circulating fluids, exhibit an infinite variety of movements 

 in their healthy state, and that they take in and give out 

 fluid and solid organic and inorganic matters according to 

 fixed laws. Hence plants and animals control their move- 

 ments irrespective of the substances by which they are sur- 

 rounded, the vital forces working in harmony with the 

 physical. 



I ofier these remarks on a few of the prominent objects 

 borne towards us on that great ocean of truth, by whose 

 shores we are daily wandering, but hundreds more float 

 around them, which you may make your own, nay must, if 

 you would not rest content 



In dropping buckets into empty wells, 

 And growing old in drawing nothing up. 



I would, in conclusion, remind you of that ancient gentle- 



