38 



MR J. Y. BUCHANAN ON THE 



Table 



Hydrometer 



Details of Determination of the Total Weight of the Hydrometer 



Particulars of h)'dron)eter, . 

 Reference to laboratory note-book, 



Date of expeiimeiit, 



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. 



Mean reading, R, 



Time at finish, 



Final temperature. 



Mean temjterature, T, 



Range of temperature, _ 



Difference of mean reading from 50 mm. (50 - 'K^df), 



Weight equivalent to displacement, df { = dWr), . 



Weight required to immerse hydrometer to 50-mm. mark at mean tempera 



ture, T, {w + dwr), _ 



Difference of mean temperature, T, from standard temperature (T-T — di) 

 Correction for difference, rfi ( = rfw<), ....... 



Weight required to immerse hydrometer to 50-mm. mark at standard tem 



perature, T, (w + dwr + dwt), 

 Total weight displaced by hydrometer when floating at 50-mm. mark at 



standard temperature, T, 



a 



Hydi 



. b 



... 



c 





. d 



... 



e 





■ fo 



IV 



■ f^ 



0-525 



■ U 



0-625 



■ U 



0-725 



■ U 



0-825 



. u 



0-925 



• h 



1-025 



• /r 



1-125 



. u 



1-225 



• U 



1-3-25 



• g 



0-925 



. h 





X 





■ 3 





. k 





. I 





m 





n 











• V 





• ? 





r 





t s 





ometer No. 17. 

 II. 161 



1903 



Feb. 28 



10.58 a.m. 



15-00° 



R 



5-8 

 17-0 

 27-8 

 39-1 

 50-2 

 61-3 

 72-5 

 84-8 

 95-0 



50-39 



11.18 a.m. 



15-00° 



15-00° 



0-00 



-0-39 



-0-C035 



0-9215 



0-9215 

 181-8328 



J. Y. B., 1893 

 II. 165 

 1903 

 Feb. 28 

 11.30 a.m. 

 15-02° 

 R 

 6-0 

 17-1 

 28-2 

 39-3 

 50-3 

 61-3 

 72-0 

 84-0 

 95-2 



50-37 

 11.45 a.m. 

 14-98° 

 15-00* 

 0-02° 

 -0-37 

 -0-0033 

 0-9217 



0-9217 

 181-8330 



Table 



Hydrometer 



Details of Determination of the Total Weight of the Hydrometer 



Particulars of hydrometer, 

 Reference to laboratory note-book, 



Date of experiment, . 



Time at start, . 



Temperature at start, 



Added weight, w, and reading. 



First added weight or reading. 



Second ,, ,, 



Third 



Fourth ,, ,, 



Fifth ,, ,, 



Sixth ,, ,, 



Seventh ,, ,, 



Eighth 



Ninth ,, _,, 



Mean added wei^lit, w, 



Mean reading, R, 



Tiine at finish, . 



Final temperature, . 



Mean temperature, T, 



Range of temperature. 



Difference of mean reading from 50 mm. (50 -K = df), 



Weight equivalent to disidacement, df ( =dwr), 



Weight required to immerse hydrometer to 50-mm. mark 

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



Difference of mean temperature, T, from standard tempera- 

 ture (T-T=rfO. 



Correction for difference, d?(=dw/), 



Weiglit required to immerse hydrometer to 50-mm. mark 

 at standard temperature, T, (w + dwr + diot), 



Total weight disi)laced by hydrometer when floating at 

 50-mm. mark at standard temperature, T, 



a 





b 



... 



c 





d 



... 



e 



•■. 



/o 



w 



t\ 



0-4 



U 



0-5 



A 



0-6 



h 



0-7 



h 



0-8 



U 



0-9 



U 



1-0 



h 



1-1 



,/» 



1-2 



9 



0-8 



h 





I 





3 





k 





I 



. .* 



m 





n 









... 



P 





? 





r 





s 





IV. 137 



IV. 143 



IV. 149 



1903 



1903 



1903 



March 23 



March 23 



March 23 



11.35 a.m. 



2.0 p.m. 



3.0 p.m. 



19-58° 



19-58° 



19-50° 



R 



R 



R 



5-1 



6-0 



5-5 



16-2 



17-2 



17-0 



27-5 



28-0 



28-0 



38-5 



39-0 



39-0 



50-0 



500 



49-5 



61-0 



60-8 



61 



72-0 



72-5 



72-3 



83-3 



83-0 



83-5 



94-5 



94-5 



94-8 



49 79 



.50-11 



50-06 



11.52 a.m. 



2.15 p.m. 



3.15 p.m. 



19-40° 



19-48° 



19-50° 



19-49° 



19-53° 



19-50° 



0-18° 



0-10° 



0-IjO 



0-21 



-0-11 



-0-06 



0-0018 



-0-0009 



-0-0005 



0-8018 



0-7991 



0-7995 



-0-01° 



0-03° 



... 



-0-00026 



0-00078 





0-8015 



0-7998 



0-7995 



181-7128 



181-7111 



181-7108 



Hydrometer No. 17. J.Y.B., 1893 



J IV. 149 IV. 155 IV. 161 



1903 1903 



March 24 March 24 



12 p.m. 1.51 p.m. 



19-53° 19-50° 



R R 



5-3 5-5 



16-5 17-0 



27-8 28-0 



39-0 39-2 



50-2 50-1 



61-9 610 



72-1 72-5 



83-8 83-8 



95-0 95-0 



50-17 50-23 



12.15 p.m. 2.5 p.m. 



19-51° 19-50° 



19-52° 19-50° 



0-02° 0-00 



-0-17 -0-23 



-00015 -0-0020 



0-7985 0-7980 



0-02° 



0-0005 



0-7990 0-7980 



181-7103 181-7093 



