Medical science further owes to him the classification of new growths on a natural histological basis, the elucidation of leucaemia, glioma and lardaceous tumours, and detailed investigations into many diseases - tuberculosis, pyaemia, diphtheria, leprosy, typhus, &c. Among the books he published on pathological and medical subjects may be mentioned Vorlesungen fiber Pathologic, the first volume of which was the Cellular-pathologic (1858), and the remaining three Die Krankhaften Geschwiilste (1863-67); Handbuch der speziellen Pathologic and Therapie (3 vols., 1854-62), in collaboration with other German surgeons; Gesammelte Abhandlungen zur wissenschaftlichen Medizin (1856); Vier Reden fiber Leben and Kranksein (1862); Untersuchungen fiber die Entwicklung des Schlidelgrundes (1857); Lehre von den Trichinen (1865); Ueber den Hunger-typhus (1868); and Gesammelte Abhandlungen aus dem Gebiete der afentlichen Medizin and der Seuchenlehre (1879).
In the monastic period pharmacy was to a great extent under the control of the religious orders, particularly the Benedictines, who, from coming into contact with the Arabian physicians, devoted themselves to pharmacy, pharmacology and therapeutics; but, as monks were forbidden to shed blood, surgery fell largely into the hands of barbers, so that the class of barber-surgeons came into existence, and the sign of their skill in blood-letting still appears in provincial districts in England in the form of the barber's pole, representing the application of bandages.
In 1748 the Apothecaries' Corporation obtained a charter empowering them to license apothecaries to sell medicines in London, or within 7 m., and intended to use it to restrain chemists and druggists from practising pharmacy, and to prohibit physicians and surgeons from selling the medicines they prescribed; but the apothecaries, by paying increased attention to medical and surgical practice, had not only alienated the physicians and surgeons, but materially strengthened the position of chemists and druggists as dispensers of prescriptions.
Other educational institutions are the Indianapolis College of Law (1897), the Indiana Medical College (the School of Medicine of Purdue University, formed in 1905 by the consolidation of the Medical College of Indiana, the Central College of Physicians and Surgeons and the Fort Wayne College of Medicine), the State College of Physicians and Surgeons (the medical school of Indiana University), the Indiana Veterinary College (1892), the Indianapolis Normal School, the Indiana Kindergarten and Primary Normal Training School (private), and the Winona Technical Institute.
There may also be mentioned the Royal College of Surgeons, Lincoln's Inn Fields, with museum; the Royal Colleges of Organists, and of Veterinary Surgeons, the College of Preceptors, the Jews' College, and the Metropolitan School of Shorthand.