352 AFTERWARDS. [Chap. VIII. 



monograph was to have been printed by the Smithsonian In- 

 stitution, which also liberally provided the services of Mr. 

 Emerton, an admirable draughtsman, in preparing a series of 

 drawings of all the principal species, with magnified illustrations 

 of their dentition, etc. 



" At his death he left the collection of Chitons in a beautiful 

 state of perfection, and with the details of the anatomy of many 

 of the species fully worked out. Arranged on glass tablets, this 

 part of his collection alone now occupies a space of fifteen feet 

 by two feet of table cases, besides a large number of alcoholic 

 preparations. The manuscript of the monograph was left com- 

 plete as to material, with the notes on each genus made up in a 

 separate fasciculus ; but it had not been written out for publi- 

 cation. The labour of editing it has been entrusted by the 

 Smithsonian Institution to Mr. Dall, well known by his works 

 on the Natural History of the West Coast of America, and an 

 esteemed personal friend of Dr. Carpenter.* ■ 



" We had hoped that ultimately a catalogue of the whole 

 collection, embodying the results of Dr. Carpenter's long labours 

 on the discrimination of specific and varietal forms, would have 

 been prepared and published by the University. This cannot 

 now be realized; but the portion of the collection which he had 

 mounted presents to the eye a wonderful exhibition of the 

 varietal forms of the more variable species, in contrast with the 

 apparent fixity of others. Several important groups, more 

 especially the Pulmonates, remain unmounted, though all are 

 named and carefully arranged in drawers under the table 

 cases. 



"From time to time Dr. Carpenter gave admirable ex- 

 positions of the physiology of the Mollusks in popular lectures, 

 and in Museum demonstrations to students. He wrote many 

 notes on new or critical species placed in his hands, and was 

 always ready to give his judgment on any difficult specimen, 

 recent or fossil, aiding in this way all other naturalists within his 

 reach. 



* "Mr. Dall has, in a recent Memoir on the Limpets and Chitons of 

 Alaska, given an abridgment of Dr. Carpenter's classification, in advance 

 of its more full publication. " 



