Whilst the 'Human Physiology' was passing through its several editions, the 'Principles of Comparative and General Physiology' reached a third edition, thus forming a companion volume. It has hemmer teen thought advisable to equate the General from the Casstaratiee Physiology, and in 1854 a volume totaled the 'Princi plee at Comparstive Phyaiolemg ' was published. This is to be by the ' Principle. of General Physiology,' in one volume. The two works will therefore be thenceforth published as three inde volumes, comprising the whole range of biological science. Thus works are a eyelopiedia in themselves, and indicate not only • lure amount of labour in their production, but a vast extent of careful rending and rewards. Such works might well bane occupied • lifetone. But these are only a portion of Dr. Carpenter's labours; for he has been a constant contributor to the ' eyed/1"Bit of Anatomy and Ph's/elope where some of the most important articles—as those on ' Life.' ' Microscope," Nutrition," Secretion," Sleep," Smell,' 'Taets,"Touch,' and 'Varieties of Mankind '—are from his pen. Such a writer must be • critic; and u a critic Dr. Carpenter has exposed himself to the enmity of men lees gifted than himself, and he has been charged as • plagiarist, and a more compiler. This however is not true. If Dr. Carpenter had dons nothing more than publish his pique on the 'Structure of Shell.; and the' Correlation of Vital and Physical Forcer.' he would have stood high as a man of science. In an answer to this charge, in the preface to the third edition of his 'General and Comparative Physiology; he claims the following facts and doctrines is his own :— I. The mutual connection of the vital forces and thbir relation to the physical. This doctrine is fully developed in a paper on the 'Mutual lichationa of the Vital and Physical Forces,' in the ' Philo eophical Transactions' for 1850.
& The general doctrine that the truly vital o'perstione of the animal as well as the vegetable organism are performed by the agency of untransformod cells, which was first developed in an ' Essay on the Origin and Functions of Cells,' published in the 'British and Foreign Medical Review' for 1843.
3. The organic structure of the shells of Mellow, Echinodermata, and eructates', of which a full account is contained in the ' Reports of the British Association' for 1844 and 1847.
4. The application of Von gir's law of development from the general to the spemaL to the interpretation of the succession of organic forms presented In geological lima 5. The relation between the two methods of reproduction, that by
gemmatlon and that by sexual union, with the application of this doctrine to the phenomena of the so-called 'alternations of generations' filet developed in the 'British and Foreign Medico-Chirurgical Review' for 1848 and 1849.
& The relation between the different methods of sexual reproduction in plants, first developed in the 'British and Foreign Medico-Chlrurgfcal Review' for 1349.
7. The application of the doctrine of reflex action to the nervous system of lsrwtedrara, especially articulated animals, first developed to the author's prize thesis published in 1939.
8. The functional relations of the eonsory ganglia to the spinal cord on the owe band, and to the cerebral hemispheres on the other.
In addition to the works above mentioned, Dr. Carpenter has published a 'Manual of Human Physiology' for the use of students, which has gone through several editions. His last work, which has just lamed (1850 from the press, la' On the Microscope; its Reve lations and its Uses.' It displays the same industry, accuracy, and impartiality u hie other writings; and undoubtedly deserves a high position amongst week, devoted to an account of the structure and uses of this instrument. Reference has been made to Dr. Carpenter's neweles Iii the structure of shells. This has led him to Investigate the family of small creatural' known by the name of Foraminifera. Ile has already published several papers on the fossil forms of this family, awl L preparing a work on the structure, functions, and general history of this group of animals, for publication by the Ray Society.
Dr. Carpenter for many years edited the ' British and Foreign Medico Chirurgical Review ; but whilst thus occupied with writing ho has also performed the duties of lecturer. He is professor of medical jurispru dence In University College, London; lecturer on general anatomy and physiology at the London Hospital School of Medicine ; and an esuniner in physiology and comparative anatomy in the Univcrsit7 of London. Dr. Carpenter was admitted a Fellow of the Royal Society In 1344. In 1519 Dr. Carpenter gained a prize of 100 guineas offered fir the beet easy on the subject of ' Alcoholic Liquors.' His essay was published la 1850 under the this of the ' Uee and Abuts, of Alco holic Liquors,' and acquired great popularity. especially among those who adopt the principle of total atatmonce from intoxicating drinks. It bas been since more than once reprinted.