. A system of anatomy for the use of students of medicine (Volume 1). given.— Deutsch,* under the direction of Purkinje, and Miescherf ofBerlin, whose investigations were made prior to those of Gerdy,and with the aid of the microscope, have arrived at nearly simi-lar conclusions, in regard to the structure of bone. In very thin transverse sections of long bones, which had beenmacerated in dilute acid, they discovered the circular orifices ofthe longitudinal canals in the compact portions of the bone; andin thin longitudinal sections they were seen divided in the direc-tion of their length. (Se
. A system of anatomy for the use of students of medicine (Volume 1). given.— Deutsch,* under the direction of Purkinje, and Miescherf ofBerlin, whose investigations were made prior to those of Gerdy,and with the aid of the microscope, have arrived at nearly simi-lar conclusions, in regard to the structure of bone. In very thin transverse sections of long bones, which had beenmacerated in dilute acid, they discovered the circular orifices ofthe longitudinal canals in the compact portions of the bone; andin thin longitudinal sections they were seen divided in the direc-tion of their length. (See Figs. 4 and 5.) These circular canals, according to these observers, commu- • De penitiori ossium structura observationes. Vratislavire, 1834.— De ossium geneai, struclura et vita. Berolini, 1836.—p. 3* 30 DEUTSCH AND MIESCHER ON THE INTIMATE STRUCTURE OF BONE. nicate here and there with each other, and constitute the longi-tudinal and transverse canals of Havers, and which are describedby Lewenhoeck, as his third and fourth kinds of pores. Fig. 4.* c. d, cL —These canals are filled with yellowish medullary or adipose matter, in which according to Miescher, are seen many minute capillary vessels, when successfully injected after the method of Krause. Fig. 5 *
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