PKEFACE. 



THE specimens and dissections described in the following 

 pages have been prepared to illustrate the most important 

 forms in Invertebrate and Vertebrate Anatomy. 



When the first edition of these descriptions, entitled 'List 

 of Dissections/ was published in 1871, Invertebrate Anatomy 

 alone was illustrated. We have now included four representa- 

 tive Vertebrate forms Rat, Pigeon, Frog, and Perch : and 

 have increased the series of Invertebrata from 55 to 90; adding 

 to it several specimens, with detailed descriptions, of the Exo- 

 skeleton in those forms where such descriptions are not to be 

 met with in the text-books that are commonly used by English 

 students. 



All the descriptions have been carefully revised. As in the 

 former edition, we have not attempted to give a complete 

 account of each dissection, but merely an indication of its 

 leading features, to enable students more readily to recognise 

 the points dwelt upon in the literature of the subject, or in 

 lectures; and to shew them clearly the position and relation 

 of the organs which they will subsequently have to examine 

 when they begin to dissect. For this reason the very language 

 used by Prof. Rolleston, Prof. Huxley, and others has been 



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