PREFACE. 
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Fifty-three Volumes of the BoranicaL, MaGazinz 
having appeared, the necessity of new General In- 
dexes is, we believe, universally felt by the Subscrib- 
ers; none having been published, except that which 
was given at the end of the Twentieth, and another 
full and very valuable one, at the end of the Forty- 
second volume; and which was prepared under the 
direction of its late excellent Editor, Dr. Surs. The 
difficulty of forming that series of Indexes was ac- 
knowledged ; and it may well be supposed, that the 
Work having increased to so much greater a length, 
and the advanced state of the Science having occa- 
sioned a prodigious change of names, the difficulty 
now, of constituting Indexes to the whole Work is 
proportionably increased; so as to render it scarcely 
possible to compile such, as shall be simple, for the 
purposes of reference, and, at the same time, useful, 
for its synonymy. In the present instance, we have 
found it necessary to differ from the arrangement of 
the Indexes to the earlier volumes, just alluded to, 
and we trust we have thereby rendered them even 
more intelligible. 
From our own experience, we have found, that 
the enumeration of plants, in the order of the time of 
publication, is not attended with that degree of utility 
commensurate with the labor of the work, and the 
space it would occupy; and we have considered, that 
the Index of English Names required the number of 
each plate to be attached to it. 
It has been an object with us to render the Indexes 
strictly applicable to the Work itself, and referable to 
