645 



On Sulphamidobenzamine, a new base ; and some Remarks 

 upon Ureas and so-called Ureas. By A. W. HOFMANN, 

 LL.D., F.R.S. &c. (See p. 598.) 



XI. st Researches on the Phosphorus-Bases. 3 ' No. VIII. Oxide 

 of Triethylphosphine. By A. W. HOFMANN, LL.D., F.R.S. 

 &c. (See p. 603.) 



XII. " Researches on the Phosphorus-Bases." No. IX. Phos- 

 pharsonium Compounds. By A. W. HOFMANN, LL.D., 

 F.R.S. &c. (See p. 608.) 



XIII. " Researches on the Phosphorus-Bases." No. X. Meta- 

 morphoses of Bromide of Bromethylated Triethylphos- 

 phonium. By A. W. HOFMANN, LL.D., F.R.S. &c. (See 

 p. 610.) 



XIV. ' e Researches on the Phosphorus-Bases." No. XI. Ex- 

 periments in the Methyl- and in the Methylene- Series. 

 By A. W. HOFMANN, LL.D., F.R.S. &c. (See p. 613.) 



XV. " Researches on the Phosphorus-Bases." No. XII. Rela- 

 tions between the Monoatoinic and the Polyatomic Bases. 

 By A. W. HOFMANN, LL.D., F.R.S. &c. (See p. 619.) 



XVI. " On the Physiological Anatomy of the Lungs." By 

 JAMES NEWTON HEALE, M.D. Communicated by Sir 

 B. C. BRODIE, Bart., P.R.S. Received August 28, 1860. 



(Abstract.) 



The arrangement observed in the divisions and subdivisions of the 

 bronchial tube is that of a panicle. There is everywhere to be di- 

 stinguished a straight diminishing tube, from which lesser tubes are 

 given off alternately from its sides ; these lesser tubes in their turn 

 observe a similar plan of distribution, and the smaller tubes, down to 

 their ultimate terminations, are governed by the same system. There 

 is nowhere to be found either a true dichotomous or a trichotomous 

 division. 



The distinction between that part which is bronchial tube and 

 that which is parenchyma, is, in a properly injected lung, marked 

 and very decisive, and can never be mistaken by even the most inex- 



