42 



MR J. Y. BUCHANAN ON THE 



Table 



HydroTneter 



Details of Determination of the Total Weight of the Hydrometer 



Particulars of h)'drometer, 

 Reference to laboratory note-book, 



Date of experiment, . 



Time at start, . 



Temperature at start. 



Added weight, w, and reading, R, 



First added weight or reading, 



Second , , , , 



Third 



Fourth , , , 



Fifth 



Sixth 



Seventh , , , , 



Eighth 



Ninth ,, _ „ 



Mean added weight, w, 



Meau reading, R, 



Time at finish, . 



Final temperature, _. 



Mean temperature, T, 



Range of temperature, 



Difference of mean reading from 50 mm. (50 - R=t/r), 



Weight equivalent to displacement df ( =d'w, 



Weight required to immerse hydrometer to 50-mm. mark 

 at mean temperature, T, {w + divr), 



Difference of mean temperature, T, from standard tempera- 

 ture (T-T=d<), 



Correction for difference c?i ( = (;?W() 



Weight required to immerse hydrometer to 50-mm. mark 

 at standard temperature, T, {=w + d^Vr + dwt), 



Total weight displaced by hydrometer when floating at 

 50-mm. mark at standard temperature, T. 



a 







Hydrometer No. 21. J. 



Y. B., 1893. 



b 





II. 17 



IV. 139 



IV. 145 



IV. 151 



IV. 157 







1903 



1903 



1903 



1903 



1903 



c 





Feb. 10 



March 23 



March 23 



March 23 



March 24 



d 



... 



1.15 p.m. 



12 p.m. 



2.20 p.m. 



3.15 p.m. 



12.25 p.m. 



e 





19-8° 



19-55° 



19-55° 



19-50° 



19 51° 



h 



w 



R 



R 



R 



R 



R 



A 



0-4 



4-2 



40 



3-5 



3-8 



3-5 



h 



0-5 



160 



15-3 



15-1 



15-5 



15-1 



h 



0-6 



28-0 



27-1 



27-0 



27-2 



26-2 



h 



07 



39-1 



39-0 



38-5 



39-0 



38-5 



h 



0-8 



500 



610 



50-5 



50-8 



50-5 



h 



0-9 



62-5 



62-3 



62-2 



62-5 



62-0 



A 



1-0 



74-2 



74-2 



74-0 



74-3 



73-5 



U 



1-1 



86-0 



86-0 



86-0 



86-0 



85-2 



U 



1-2 



97-3 



97-5 



97-5 



97-5 



97-5 



g 



0-8 













h 





50-81 



50-71 



50-47 



50-73 



50-22 



i 





1.28 p.m. 



12.15 p.m. 



2.35 p.m. 



3.30 p.m. 



12.40 p.m. 



J 



... 



19-50° 



19-49° 



19-45* 



19-51° 



19-50° 



k 



... 



19-65° 



19-52° 



19-50* 



19-505° 



19-505° 



I 



... 



0-30° 



0-06° 



0-10° 



0-01° 



0-01° 



in 



... 



-0-81 



-0-71 



-0-47 



-073 



-0 22 



n 





-0-0069 



-0-0060 



-0-0040 



-0-0062 



-0-0018 









0-7931 



0-7940 



0-7960 



0-7938 



0-7982 



P 





o-is" 



0-02° 





0-005° 



0-005° 



q 





0-0040 



0-0005 





0-0001 



0-0001 



r 





0-7971 



0-7945 



07960 



07939 



0-7983 



s 





188-5796 



188-5770 



188-5785 



188-5764 



188-5808 



