QUARTERLY CHRONICLE OF MICROSCOPICAL SCIENCE. 83 



flamed tissues has been studied by Carmalt and Strieker in 

 the cornea. Among other things they describe appearances 

 which suggest to them the possibility — first, that fixed tissue- 

 cells may become permeable canals, and thus true vessels ; 

 and, secondly, that new cells, which develop into ordinary 

 blood-corpuscles, are formed within the cells thus altered. 

 This view of the new formation of blood elements outside the 

 normal vessels, has (we need not say) always been held by 

 Rokitansky, and by many English observers, but of late 

 years has dropped out of sight. — {Medizinische JahrbUcher, 

 1871, 3rd part, p. 428.) 



X. Digestive Organs and Glands. — Schwalbe ("On the Glands 

 of thelntestines, especially the GlandsofBriinner/' 'Schultze's 

 Archiv,' viii, 92) has found in the duodenum of the rabbit, 

 but not of other rodents^ glands resembling the pancreas in 

 structure, which he believes to be not the same as certain 

 glands functionally resembling the pancreas described by 

 CI. Bernard from the duodenum. They are quite distinct 

 from Briinner's glands ; which also are very elaborately 

 described. Some of their secreting elements are found to 

 resemble the capital cells of Heidenhain from the gastric 

 glands, while others are still more like the secreting cells of 

 certain salivary glands and mucous glands of the mouth. The 

 glands of Lieberkiilm have an entirely cliff'erent structure. 



XI. Teeth. — ' Contributions to the Histology and Pathology 

 of the Tuotli Pulp' is the title of a dissertation by Julius 

 Bruck, published in Breslau. 



XII. Urinary andSexual Organs. — Lowenstein ("The Lymph- 

 follicles of theMucousMerabraneof the Vagina," Centralblatt, 

 No. 35, Sept. 2nd, 1871) shows that this, mucous membrane 

 is not destitute of such structures, as is generally asserted in 

 anatomical text-books. 



EMBRYOLOGY AND DEVELOPMENT. 



Blood-vessels, — Klein ; the middle germinal layer in its 

 relations to the development of the earliest blood-vessels and 

 blood-corpuscles in the embryo of the foal (with six plates). 

 ' Reports of the Imperial Vienna Academy,' vol. Ixiii, second 

 division, March, 1871. 



Oellacher (' Sch. Archiv,' viii, p. 1), contributions to the 

 history of the germinal vesicle in the vertebrate ovum. 



Skull. — ' Essai sur I'Anatomie, &c., de la Voute du Crane ;' 

 these pour le doctorat. Par E. Le Courtois. Paris, 1871. 



Mr. Parker's elaborate paper on the "Development of the 

 Skull of the Common Frog," which, though not strictly 

 histological, must not pass unnoticed here, has just been 

 published in extenso in the ' Philosophical Transactions.' 



