60 Bibliographical Notices. 
quite prepared, from its general excellence, to expect for it a widely 
extended popularity. We are glad to sec that in the present edition 
those errors and omissions of greater or less importance which were 
indicated in its predecessor have been rectified and supplied, and that 
the author has likewise cast off certain relics of an antiquated system 
to which we particularly directed attention. 
As Professor Jones’s volume professes to be an outline of the 
*‘organization”’ of animals, he might perhaps claim to be to a cer- 
tain extent exempt from criticism in respect of his system ; but inas- 
much as it is a Manual of Comparative Anatomy and Physiology, 
and the anatomical statements are to be regarded as illustrative of 
groups rather than individual species, the classification adopted by 
the author becomes a matter of primary importance; and we took 
occasion to object, in our notice of the second edition, to the retention 
of certain groups in certain positions, as having a tendency to confuse 
the notions of students upon points of high interest in zoology. 
In the volume before us, however, nearly all this is changed: the 
Epizoa, instead of occupying their old anomalous position amongst 
the Radiata, have been transferred to their true place in the class 
Crustacea, and have been accompanied in their flight by their old neigh- 
bours the Rotifera, which, however, still of course retain the rank of 
a class; the Cirrhopoda, which Professor Rymer Jones persisted in 
1855 in regarding as Molluscan, are likewise transferred to the 
Annulose series, but (we think) erroneously kept distinct from the 
Crustacea. Lastly, the Bryozoa have also made their way from their 
former low position, to take the place which is now almost univer- 
sally assigned to them amongst the Mollusca. Curiously enough, 
however, our author has hesitated to adopt another change which 
appears to us equally warranted with those just mentioned, namely, 
the transfer of the Entozoa, or Helminthozoa as he now calls them 
(including, moreover, the Turbellaria), to the division of Annulose 
animals ; and probably the extreme supporters of the new school of 
zoology may think that he would have been equally justified in re- 
moving the Echinodermata into the same series. We are not, how- 
ever, prepared to cavil at the omission of this change, as we hold it 
to be the duty of the author of any student’s manual of science not 
so much to give his own peculiar and perhaps still problematical 
views upon any given point, as to bring his general treatment of his 
subject as much as possible into accordance with the most generally 
received opinions. In this, with the single exception of the omission 
of the Helminthozoa, Professor Jones appears to us to have admir- 
ably succeeded as far as regards the three higher subkingdoms, to 
. which he gives the names of Homogangliata, Heterogangliata, and 
Vertebrata ; but we think it a pity that he has not followed the same 
course with the lower forms. Feeling, perhaps, a distrust of the 
results obtained by some of our more advanced zoologists, and desir- 
ing, as he himself says, to avoid unnecessary changes in zoological 
classification, our author, whilst advancing a certain distance on the 
route traced by Professors Huxley and Leuckart and followed by 
Professor Greene in his excellent manual of the Ccelenterata, and 
