26 Messrs. L. Hill and M. Greenwood. Influence of [Oct. 6. 



Table I. — Urine Analyses from Hill and Greenwood's Experiments. 

 Individual Observations. 









N 2 per cent, calcu- \ 



Pressure. 



N 2 per cent, found. 



Means. 



lated, supposing 

 urine followed 

 the pressure. 



+ 01b 



1-21, 1-19, 0-97, 1-10, 1-31, 1-07 



1-14 



1-1 



+ 30 lbs. for less 

 than 10 mins. 



2-52, 1-67, 1-83, 2-41, 1*5 



1-99 



3'3 





+ 30 lbs. for more 



3-32, 3-49, 3-29, 322, 3'42, 3"94, 2'57 



3-32 



3-3 



than 10 mins. 









+ 45 lbs. for less 



2-64, 4-57 (8 mins.), 5'68 (?) (8 mins.), 



4-29 



4-4 



than 10 mins. 



4-28 







+ 45 lbs. for more 



4*54, 3-78, 4-52 (?), 4'69, 4'35, 4"57, 3"46, 



4-23 



4-4 



than 10 mins. 



3-94 







+ 30 lbs. during de- 



4-01, 3-47, 3-52, 4'25, 3"68, 3'13, 3*33 



3-63 



3-3 



compression 

 + 15 lbs. during de- 



2-40, 2-78, 2-96, 3'16, 2"60, 3'04, 235, 273 



2 75 



2-2 



compression 

 + lb. on decom- 



1-84 (4 mins.), 221, 1'70, 2'30, 1*64, 2'24 



1'99 



1-1 



pression 

 + lb. 15 mins. 



1-34, 1-37, 2-37, 1*66, 1*45 (10 mins.) 



1-64 



1-1 



after decom- 









pression 

 + lb. more than 

 15 mins. after 



1-28, 107, 1*02 



1-13 



1-1 





decompression 









Table II. 

 A. Kotherhithe Tunnel Workers. 



Source of sample. 



N 2 per cent, found. 



N 2 per cent, calcu- 

 lated, supposing 

 urine followed 

 the pressure. 



In tunnel ( + 17 lbs.) ' 2*38, 1*83 



2-35 

 1-1 



After decompression (decom- 1*60, T66, 1'51, 141, T75, T74, T31, T63 

 pression time, 3| mins.) 



