119 



coats of an aneurismal tumour ; their number was in the proportion 

 of one to four of the larger globules, and their diameter was -rs^nrv 

 of an inch in the larger in contact with the circulating blood ; in 

 the other layers they became more numerous, and in that longest 

 coagulated were in the proportion of four to one. 



In the section of an aneurismal tumour, the author notices the un- 

 common appearance of crystals of sulphate of lime with muriate and 

 phosphate of soda, which, as well as the globules, he supposes to 

 have been originally dissolved in the serum, since they are only 

 brought to view by the act of coagulation. 



In coagulable lymph deposited during violent inflammation, the 

 same small globules were observed, mixed with a few colourless 

 blood globules. The globules, stated by the author in a former lec- 

 ture to have been produced in the serum, are also of a similar nature ; 

 and to distinguish them from the larger blood globules, he proposes 

 to call them globules of lymph. In the buff of blood they were very 

 numerous in the upper and firmest part, but the lower and softer 

 layer consisted principally of blood globules. 



A tumour in the prostate gland was found Mr. Bauer to contain 

 both kinds of globules, and a considerable proportion of transparent 

 jelly. The hard compact part of a tumour in the breast consisted 

 chiefly of lymph globules and elastic jelly. In its softer part the 

 blood globules predominated, so that the structure of these tu- 

 mours is nearly allied to that of aneurismal sacs. 



In buffy blood the proportion of aeriform matter, evolved under 

 the exhausted receiver of the air-pump, was less than that of healthy 

 blood, and'appeared in excess in the blood drawn from the arm of a 

 person an hour after a hearty meal. In the mucus of the pylorus 

 and duodenum Mr. Bauer found lymph and blood globules. In the 

 chyle he found the size of the globules various ; those which were 

 very small increased in size whilst under the microscope, and became 

 as large as blood globules enveloped in their colouring matter; they 

 appeared opake and milk white. Mr. Bauer is satisfied, from these 

 observations, that the globules of the blood are perfectly formed in 

 the mesenteric glands, with the exception of colour, which they re- 

 ceive in the vessels of the lungs. 



The Eakcrian Lecture. On the Composition and Analysis of the In- 

 flammable Gaseous Compounds resulting from the Destructive Distil- 

 lation of Coal and Oil, with some Remarks on their relative Heating 

 and Illuminating Powers. By William Thomas Brande, Esq. Sec. 

 R.S. Prof. Chem. R. I. Read November 18, 1819. [Phil. Trans. 

 1820,^.11.] 



This paper is divided into two sections : in the first, the author's 

 object is to show that no other compound of carbon and hydrogen 

 can be demonstrated to exist except that usually termed oleftant gas, 

 consisting of one proportion of carbon and one of hydrogen ; and that 

 the supposed compound of one of carbon and two of hydrogen, gene- 



