The labor required in the preparation of these two reports was 

 very great, and involved the examination of a vast number of 

 works of travel, records of voyages and expeditions, and the 

 publications of various societies; the examination of numerous 

 museums and private collections and the elaboration of synon- 

 omy and the correlation of data scattered here and there in a 

 multitude of volumes, in various public and private libraries. 



As one of the many, who have been greatly benefited by 

 Dr. Carpenter's work, I can say with truth, that these conscien- 

 tiously thorough compilations, made all the more valuable by 

 his judicious comments and methodical arrangement, are of 

 inestimable importance to the student, for they constitute a 

 bibliography of the subject, a starting point and guide for 

 subsequent investigations. 



In addition to the foregoing — several monographs of partic- 

 ular groups of shells, and various papers have been published 

 by him from time to time, in the Proceedings of the Zoological 

 Society of London, and of this Academy, as well as in other 

 publications. 



In 1865 he removed to America and settled in Montreal. 

 " Here he had hoped to spend his remaining years in his favorite 

 scientific and benevolent pursuits; but shortly after his arrival 

 the failure of a bank in England swept away a large part of the 

 moderate competence on which he relied, and he felt himself 

 necessitated to devote a j^art of his time to remunerative work. 

 He selected the teaching of boys and persevered in this arduous 

 calling to the end." He was " often urged to abandon his 

 teaching and enter on some line of scientific work more suited 

 to his powers and acquirements; but he preferred his indepen- 

 dence and to make his higher scientific and philanthropic 

 occupations altogether labors of love." 



His extensive general collection of shells, he presented to the 

 McGill University, and within the last ten years devoted much 

 time to its arrangement, which he left unfinished as well as an 

 elaborate monograph of the perplexing group of the Chitons, 

 which, however, was nearly completed, and will probably be 

 published by the Smithsonian Institution. 



Without further ennumerating his manifold scientific labors, 

 and his ever ready assistance to students and others interested 

 in scientific, pursuits; his untiring effort in behalf of sanitary 

 and moral reforms, and his attention to other and various duties 



