( 277 ) 



III, X = 0,0050 



T A ph. endc. pii 



29°.4 not to be observed 



29 .J ,, ,, 



31 .2 „ 76.75 



32 .9 79.10 



34 .6 77.40 I and 2 81.05 



35 .9 79.90 1 and 2 82.25 



37 .4 82.90 1 and 2 84.00 



38 .9 not to be observ. 85.50 

 gas escaped from the tnbe. 



IV, .^■=: 0,0022 



V, X = 0.476 



T endc. ph. 



29°.9 54.00 3 



31 .2 55.15 3 



32 .9 57.40 3 



34 .6 58.45 3 



35 .9 59.70 3 



37 .4 61.50 3 



38 .9 63.20 3 



39 .9 64.45 3 



38 .9 84.20 2 and 3 100.30 3 



39 .9 86.60 pl(). 104.05 3 



