﻿of Phosphorus, Sulphur, and Aldehyde. 519 



Table III.— Phosphorus and Dry Oxygen {continued). 





Temperature = 20°'4to20 



°-65. 





Pressure of phosphorus -vapour =1*035 



mm. bromnaphth. 





P. 



a. 



P. 







t. 



In millim. 



of brom- 



naphthalene. 



In millim. 



of brom- 



naphtbalene. 



In millim. 

 of mercury. 



K v 



K. 







1412-8 



59-4 



150-4 







18 



1395-8 





148-5 



35-1 





35 



1381-5 



tt 



146-9 



32-8 









1082-5 



46-7 



115-1 







31 



1036-0 





109-9 



45-7 





45 



• 1012-7 



>5 



1073 



48-9 









6080 



28-0 



64-4 







10 



589-0 



f> 



623 



460 



1-93 



19 



5660 





59-8 



52-9 



2-23 



21-5 



561-0 





59-2 



52-2 



2-21 



35 



531-5 



ft 



559 



51-6 



2-22 



48-5 



498-5 



5) 



52-3 



52-4 



2-29 



67 



451-5 



}f 



47-1 



53-2 



2-38 



106 



347-0 





35-4 



53-4 



2-53 



116 



3130 



„ 



31-7 



54-2 



262 



127-5 



270-0 



" 



26-9 



551 



2-74 



The reaction now first began at a much lower pressure than 

 formerly. Under a pressure of oxygen of 377 millim. it did 

 not begin ; it just began when the pressure was reduced to 

 202 millim. Curve I. (fig. 3) shows the connexion between 



Fig. 3. — Phosphorus and Dry Oxygen. 



70 



50 



30 



SHB*^H*B*H*8BW*^BP"aBiw*f"*B8^B fi^SSw l BBi B"^B^^"Mi 3SB "E8Bfii^*^flB 



100 

 Pressure. 



150 



the pressure of the oxygen and the velocity with which it 

 acts on the phosphorus. The curve is constructed from the 

 figures given in Table III. in the same way as before. Setting 



200 



