(A) (B) (A) (B) (A) (B) (A) (B) (A) (B) 405 215.8 417 222.8 429 229.8 441 236.9 453 244.0 406 216.4 418 223.3 430 230.4 442 237.5 454 244.6 407 217.0 419 223.9 431 231.0 443 238.1 455 245.2 408 217.5 420 224.5 432 231.6 444 238.7 456 245.7 409 218.1 421 225.1 433 232.2 445 239.3 457 246.3 410 218.7 422 225.7 434 232.8 446 239.8 458 246.9 411 219.3 423 226.3 435 233.4 447 240.4 459 247.5 412 219.9 424 226.9 436 233.9 448 241.0 460 248.1 413 220.4 425 227.5 437 234.5 449 241.6 461 248.7 414 221.0 426 228.0 438 235.1 450 242.2 462 249.3 415 221.6 427 228.6 439 235.7 451 242.8 463 249.9 416 222.2 428 229.2 440 236.3 452 243.4 =141. Meissl’s Table for Invert Sugar.=—Invert sugar is usually the product of the hydrolysis of sucrose. The following table is to be used when the hydrolysis is complete, _i_. _e_., when no sucrose is left in the solution. The solution of copper sulfate and of the alkaline tartrate are made up as follows: 34.64 grams of copper sulfate in half a liter, and 173 grams of rochelle salt and 51.6 grams sodium hydroxid in the same volume. The quantity of sugar solution used must not contain more than 245 nor less than ninety milligrams of invert sugar. In the determination twenty-five cubic centimeters of the copper solution and an equal volume of the alkaline tartrate are mixed and boiled, the proper amount of sugar solution added to secure a quantity of invertose within the limits named, the volume completed to 100 cubic centimeters with boiling water, and the mixture kept in lively ebullition for two minutes. An equal volume of recently boiled cold water is added and the cuprous oxid at once separated by filtration on asbestos under pressure, and washed free of alkali with boiling water. The metallic copper is secured by one of the methods already described. TABLE FOR INVERT SUGAR BY MEISSL AND WIEN.[107] (A) = Milligrams of copper. (B) = Milligrams of invert sugar.