ADVERTISEMENT.

The increasing taste for the study of the Natural Sciences, has created the necessity of an elementary work on the most interesting of them all, the science of the Animal Economy, in which every thing of a strictly professional nature, and whatever else would be improper for general readers, should be carefully excluded, and the whole rendered intelligible to the minds of the young and the unlearned. To meet this necessity has been the object of the author in preparing the following sheets. To the merit of originality, he lays no pretensions; but if the manner in which the subject is here treated, shall prove an inducement to acquire some useful and interesting knowledge concerning the noblest of the works of nature, it is the only merit that he would claim. How far he has succeeded in accomplishing this object, is for instructers and common readers to say. Portland, May 11, 1829.

Note. Notwithstanding an attentive revision of the press the author regrets that many errors have escaped his notice. The only one, however, which he thinks it necessary to point out, for they are generally such as the reader instantly corrects, is that of coronoid process, for condyloid process on the 38th page.