210 Dr. Maton's and Mr. Rackett's 



links in tiie chain of organized creatures, the multiplication of 

 analogies, and the tracing of changes produced in the different 

 stages of the growth of animals, cannot fail to give curious and 

 interesting results to the profound naturalist. The investigation of 

 microscopic shells, so zealously pursued by a Plancus and a Sol- 

 dani, has been taken up with no small success by 



M. M. LEOPOLD A FICHTEL 



AND 



J. P. CHARLES A MOLL, 



whose elegant and instructive work on this subject deserves par- 

 ticular mention, since it is to be considered as the fullest cata- 

 logue of minute Tesfacea that has yet been published. It is em- 

 bellished with beautifully coloured plates, which represent the 

 several subjects both of the natural and of a magnified size. The 

 descriptions are given in tAvo languages (viz. the Latin and the 

 German), and we must not omit our tribute of applause to the 

 ingenious authors for having thus shown a respect for the scien- 

 tific world in general, as well as for their own countrymen in par- 

 ticular. It is an example which, as Ave have before ventured to 

 remark, ought to be universally adopted ; unless the adA-antages 

 of knowledge are intended to be purely local, like that Avhich re- 

 lates to the trade and traffic of nations; or unless it be thought 

 necessary for human life to be Avholly occupied in the acquisition 

 of languages. The genera of Argonanta and Nautilus form the 

 principal subjects of this volume; and many species appear under 

 each of these Avhich had been either not duly observed, or Avholly 

 unnoticed, by preceding Avriters. 



M. LAMARCK, 



