128 Pte. J. A. Hughes on the 



Experiments were performed with the tube placed thus 



(1) 



(2) 



Direction of wind. 

 < 



and a third set of readings was obtained with the tube in 

 the second position, with a metallic strip, ^ inch in width, 

 placed in front. This was caused to oscillate by the wind 

 and produced irregular convection. The results are given 

 in Table IV., and they are also shown in curves in fig. 6. 



Table IV. 

 Loss of Heat (H) and Velocity (V) results for Stream-Line lube, 



H = Calories per cm. length. V = Velocity in metres per sec. 

 R = Radiation corr. in cals. per cm. length = 113. 



(1) Tube 



Direction of 



(2) Tube 



Direction of 



(3) Tube placed 



with oscillating 



placed 



wind. 



placed 



wind. 





strip in front. 



c=> 



y 



-° 



< 



<=}. 





V 



H. 



V. 



H. 



V. 



H. 



V. 



137-3 







136-2 







136-2 







136-2 







1373 







137-3 







482-5 



3-2512 



553-1 



1-912 



686-7 



2-285 



520-6 



3-6304 



628-9 



2-341 



759 



2-821 



591-9 



4-304 



628-9 



2-555 



918 



3'502 



635-7 



4-528 



675-4 



2-704 



984 



3-908 



645-4 



4-752 



720-3 



2-890 



1032 



4-612 



680-9 



5-560 



795-0 



3-254 



1099 



5-184 



732-3 



5-956 



930 



4-228 







797-3 



6-576 



1080 



5-560 



1180 



6-352 



793*3 



6-652 



1140 



6228 







823-5 



7-060 



1187 



6-352 



1317 



7-856 



860-1 



7292 



1190 



6652 



1354 



7-980 



917 



7-780 



1267 



6-920 



1417 



8-656 



903 



8-016 



1405 



8-300 



1490 



9004 



889 



8-160 



1486 



9-076 



1627 



10-692 



898 



8-420 



1594 



10-784 



1682 



11-196 



966 



9-216 



1614 



11-116 



1778 



12-132 



973 



9-360 



1614 



11-468 



1851 



13-212 



1071 



10-080 



1610 



10-928 



1905 



14-872 



1084 



10-464 



1682 



12-172 







1060 



10-280 











1116 



11-304 











1139 



11-376 











1135 



11-456 











1255 



13-332 











1231 



13-504 











