508 



Dr. 8. Young' and Mr. G. L. Thomas on the 



are given for a series of temperatures. The mean densities, 

 calculated from the formula D = A + ott (D = density ; £ = 

 temperature Centigrade ; A and a constants depending on 

 the substance) are given in the fifth column, and the dif- 

 ferences between these and the observed results in the last 

 column. 



1 



Methyl Formate. 



Temp. 



Densities. 



Observed. 











Calc. 

 Mean. 



AX 1000. 











Liquid. 



Sat. Yap. 



Mean. 







40° C. 



•9447 



•0031 



•4739 



•4739 







60 



•9133 



•0060 



•4596 



•4596 







80 



•8803 



•0105 



•4454 



•4453 



- 1 



100 



•8452 



•0171 



•4311 



•4310 



- 1 



120 



•8070 



•0268 



•4169 



•4167 



- 2 



140 



•7638 



•0412 



•4025 



•4023 



- 2 



160 



•7136 



•0623 



•3880 



•3880 







180 



•6521 



0943 



•3732 



•3737 



+ 5 



190 



•6148 



•1178 



•3663 



•3666 



+ 3 



200 



•5658 



•1524 



•3591 



•3594 



+ 3 



206 



•5242 



•1852 



•3552 



•3552 







210 



•4857 



•2188 



•3522 



•3523 



+ 1 



212 



•4549 



•2451 



•3500 



•3508 



+ 8 



213 



•4328 



•2681 



•3504 



•3501 



- 3 



213-5 



•4157 



•2865 



•3511 



•3497 



-14 



(Critical) 2140 









•3494 





Methyl Acetate. 



60° 0. 



•8801 



•0031 



•4416 



•4425 



+ 9 



80 



•8520 



•0056 



•4288 



•4291 



+ 3 



100 



•8222 



•0097 



•4160 



•4156 



- 4 



120 



•7893 



•0158 



•4026 



•4021 



- 5 



140 



•7533 



0246 



•3890 



•3887 



- 3 



160 



•7133 



•0373 



•3753 



•3751 



- 2 



180 



•6671 



•0568 



•3620 



•3617 



- 3 



200 



•6100 



•0866 



•3483 



•3482 



- 1 



210 



•5741 



•1090 



•3416 



•3414 



- 2 



220 



•5281 



1415 



•3348 



•3347 



- 1 



227 



•4818 



•1775 



•3296 



•3300 



+ 4 



230 



•4527 



•2030 



•3278 



•3280 



+ 2 



232 



•4226 



•2295 



•3260 



•3266 



+ 6 



233 



•3995 



•2520 



•3257 



•3259 



+ 2 



(Critical) 233*7 









•3255 





