197 



III. The Books. The whole number of bound volumes is 

 eight)'-four, besides one hundred and fifty unbound volumes and 

 pamphlets, and these latter are not the least valuable portion of 

 the Library, consisting as they do of important monographs, a 

 form in which much that has been done in Algology and Mi- 

 croscopy is as yet only to be found. Among the works are the 

 splendid Microgeologie of Ehrenberg, the works of Kiitzing, 

 Queckett, Ralfs, Hassall, Smith, Agardh, Harvey, Lindley, and 

 Hutton. Indeed, nearly every thing of importance relating to 

 his favorite studies is here ; and they are rendered additionally 

 valuable by important notes of his own. 



IV. The volume containing rough sketches of microscopic 

 forms and marked " Microscopic Memoranda," is a most interest- 

 ing volume. It consists of letter-sheets of sketches made by 

 means of the camera lucida, under the microscope, or of more 

 finished drawings on glazed cards and arranged on sheets. At 

 the end is an alphabetical catalogue of the several objects deline- 

 ated. There are four hundred and fifty sheets, and seven hun- 

 dred different objects named in the catalogue. Of most of these, 

 numerous attitudes are given, so that the whole number of 

 sketches is probably not less than three thousand, and they are high- 

 ly valuable as an illustrative accompaniment to the microscopical 

 collection. They are all characteristic and instructive, and many 

 of them exquisitely done. They date as far back as 1838 — twenty 

 years ago — and being chronologically arranged, afford a graphic 

 diary of the train of Prof. Bailey's investigations, as well as 

 of his own wanderings ; for wherever he went his micro- 

 scope or his collecting boxes and bottles went with him. From 

 Quebec to Florida we trace out all his abiding-places during his 

 vacations. 



This collection is curious as it shows how he was gradually led 

 into the study of microscopic organic forms. His first observa- 

 tions were of vegetable structure — then we have an Echinorhyn- 

 chus — the ovipositor of an ephemera, &c. In January, 1839, in 

 examining some aquatic plants he perceived a curious body, the 

 nature of which he could not make out ; it afterwards proved to 

 be a Gomphonema. This excited his curiosity in that direction, 

 and his sketches of common Diatomaceae soon became frequent. 

 March 11, 1839, he sketched an organism which Ehrenberg sub- 



