34 



THE ROYAL SOCIETY OF CANADA 



TABLE I. 

 Coefficient of Expansion of Ice as Determined by Mr. Sawyer. 



Date 



Feb. 25. 



" 25. 

 Feb. 26. 



" 28. 

 Feb. 28. 

 Mar. 1.. 



" 1.. 

 Mar. 2.. 



" 2.. 

 Mar. 3 . . 



" 3.. 



Mar. 4. 



" 4. 



" 5. 



Mar. 5. 



Mar. 6. 



" 6. 



Mar. 7. 

 Mar. 7. 

 Mar. 7. 



Mar. 8. 



Mar. 9. 



" 9. 

 " 9. 

 " 9. 

 Mar. 9. 

 " 9. 



Temperatures 



Hour 



Mar. 13. 



A.M. 11.30 

 P.M. 4.30 

 A.M. 8.30 

 A.M 10.30 

 P.M. 5.00 



A.M. 

 P.M. 

 A.M. 

 P.M. 

 A.M. 

 P.M. 



10.00 

 4.30 

 8.00 

 5.00 

 8.00 

 5.00 



A.M. 8.00 



P.M. 4.15 



A.M. 9.00 



P.M. 5.00 



A.M. 8.00 



P.M. 5.00 



A.M. 8.00 



P.M. 2.00 



P.M. 5.00 



A.M. 8.00 



P.M. 2.00 



P.M 5.45 



A.M. 8.00 



P.M. 1.30 



P.M. 4.00 



P.M. 5.45 



P.M. 5.45 



P.M. 8.00 



P.M. 4.30 



Air 



+ 29°F 

 +38 

 + 25 

 + 10 

 + 14 

 + 13 

 +31 

 + 18 

 +35 

 + 15 

 +30 



+ 15 



+23 

 +9 



+ 18 

 + 11 

 + 19 



+ 2 

 + 28 

 +27 



+ 1 



+39 



+35 



+ 12 



+42 

 +42 



+37 

 +30 



+39 



Ice 



+ 14°F 

 + 21 

 + 14 

 + 2 

 +4 

 —3 

 + 12 

 +8 

 + 20 

 + 14 

 + 13 



+ 12 

 —6 



+ 1 

 —4 



+5 



—10 



+4 

 +8 



—14 



+6 

 + 15 



—2 



+ 12 



+ 18 



+ 19.5 

 + 16 



+ 19.5 



Coeff. of 



Expansion 

 of ice 



Average 

 Temp. 



0.0000285 

 0.0000317 

 0.0000287 



0.0000211 

 0.0000348 

 0.0000242 

 0.0000202 

 0.0000226 

 0.0000291 



0.0000252 



0.0000176 

 0.0000211 



0.0000185 



0.0000199 

 0.0000211 

 0.00001705 



0.00001985 



0.0000201 



0.0000210 



0.0000242 



0.0000249 

 0.0000256 



0.0000248 



0.0000302 



+ 17.5°F 

 + 17.5 

 +3 



+4.5 

 + 10.0 

 + 14.0 

 + 12.0 



+8.5 



+9.0 



-2.5 

 -1.5 



—2.5 

 —3 

 — 1 

 +6 

 —3 



+0.5 

 + 10.5 



+6.5 



+5.0 

 +8.0 



+8.75 



+ 17.75 



