(A) = Milligrams of copper.
(B) = Milligrams of dextrose.
(A) (B) (A) (B) (A) (B) (A) (B) (A) (B)
10 6.1 46 23.9 82 41.8 118 60.1 154 78.6
11 6.6 47 24.4 83 42.3 119 60.6 155 79.1
12 7.1 48 24.9 84 42.8 120 61.1 156 79.6
13 7.6 49 25.4 85 43.4 121 61.6 157 80.1
14 8.1 50 25.9 86 43.9 122 62.1 158 80.7
15 8.6 51 26.4 87 44.4 123 62.6 159 81.2
16 9.0 52 26.9 88 44.9 124 63.1 160 81.7
17 9.5 53 27.4 89 45.4 125 63.7 161 82.2
18 10.0 54 27.9 90 45.9 126 64.2 162 82.7
19 10.5 55 28.4 91 46.4 127 64.7 163 83.3
20 11.0 56 28.8 92 46.9 128 65.2 164 83.8
21 11.5 57 29.3 93 47.4 129 65.7 165 84.3
22 12.0 58 29.8 94 47.9 130 66.2 166 84.8
23 12.5 59 30.3 95 48.4 131 66.7 167 85.3
24 13.0 60 30.8 96 48.9 132 67.2 168 85.9
25 13.5 61 31.3 97 49.4 133 67.7 169 86.4
26 14.0 62 31.8 98 49.9 134 68.2 170 86.9
27 14.5 63 32.3 99 50.4 135 68.8 171 87.4
28 15.0 64 32.8 100 50.9 136 69.3 172 87.9
29 15.5 65 33.3 101 51.4 137 69.8 173 88.5
30 16.0 66 33.8 102 51.9 138 70.3 174 89.0
31 16.5 67 34.3 103 52.4 139 70.8 175 89.5
32 17.0 68 34.8 104 52.9 140 71.3 176 90.0
33 17.5 69 35.3 105 53.5 141 71.8 177 90.5
34 18.0 70 35.8 106 54.0 142 72.3 178 91.1
35 18.5 71 36.3 107 54.5 143 72.9 179 91.6
36 18.9 72 36.8 108 55.0 144 73.4 180 92.1
37 19.4 73 37.3 109 55.5 145 73.9 181 92.6
38 19.9 74 37.8 110 56.0 146 74.4 182 93.1
39 20.4 75 38.3 111 56.5 147 74.9 183 93.7
40 20.9 76 38.8 112 57.0 148 75.5 184 94.2
41 21.4 77 39.3 113 57.5 149 76.0 185 94.7
42 21.9 78 39.8 114 58.0 150 76.5 186 95.2
43 22.4 79 40.3 115 58.6 151 77.0 187 95.7
44 22.9 80 40.8 116 59.1 152 77.5 188 96.3
45 23.4 81 41.3 117 59.6 153 78.1 189 96.8
(A) (B) (A) (B) (A) (B) (A) (B) (A) (B)
190 97.3 233 120.1 276 143.3 319 167.0 362 191.1
191 97.8 234 120.7 277 143.9 320 167.5 363 191.7
192 98.4 235 121.2 278 144.4 321 168.1 364 192.3
193 98.9 236 121.7 279 145.0 322 168.6 365 192.9
194 99.4 237 122.3 280 145.5 323 169.2 366 193.4
195 100.0 238 122.8 281 146.1 324 169.7 367 194.0
196 100.5 239 123.4 282 146.6 325 170.3 368 194.6
197 101.0 240 123.9 283 147.2 326 170.9 369 195.1
198 101.5 241 124.4 284 147.7 327 171.4 370 195.7
199 102.0 242 125.0 285 148.3 328 172.0 371 196.3
200 102.6 243 125.5 286 148.8 329 172.5 372 196.8
201 103.1 244 126.0 287 149.5 330 173.1 373 197.4
202 103.7 245 126.6 288 149.4 331 173.7 374 198.0
203 104.2 246 127.1 289 150.9 332 174.2 375 198.6
204 104.7 247 127.6 290 151.0 333 174.8 376 199.1
205 105.3 248 128.1 291 151.6 334 175.3 377 199.7
206 105.8 249 128.7 292 152.1 335 175.9 378 200.3
207 106.3 250 129.2 293 152.7 336 176.5 379 200.8
208 106.8 251 129.7 294 153.2 337 177.0 380 201.4
209 107.4 252 130.3 295 153.8 338 177.6 381 202.0
210 107.9 253 130.8 296 154.3 339 178.1 382 202.5
211 108.4 254 131.4 297 154.9 340 178.7 383 203.1
212 109.0 255 131.9 298 155.4 341 179.3 384 203.7
213 109.5 256 132.4 299 156.0 342 179.8 385 204.3
214 110.0 257 133.0 300 156.5 343 180.4 386 204.8
215 110.6 258 133.5 301 157.1 344 180.9 387 205.4
216 111.1 259 134.1 302 157.6 345 181.5 388 206.0
217 111.6 260 134.6 303 158.2 346 182.1 389 206.5
218 112.1 261 135.1 304 158.7 347 182.6 390 207.1
219 112.7 262 135.7 305 159.3 348 183.2 391 207.7
220 113.2 263 136.2 306 159.8 349 183.7 392 208.3
221 113.7 264 136.8 307 160.4 350 184.3 393 208.8
222 114.3 265 137.3 308 160.9 351 184.9 394 209.4
223 114.8 266 137.8 309 161.5 352 185.4 395 210.0
224 115.3 267 138.4 310 162.0 353 186.0 396 210.6
225 115.9 268 138.9 311 162.6 354 186.6 397 211.2
226 116.4 269 139.5 312 163.1 355 187.2 398 211.7
227 116.9 270 140.0 313 163.7 356 187.7 399 212.3
228 117.4 271 140.6 314 164.2 357 188.3 400 212.9
229 118.0 272 141.1 315 164.8 358 188.9 401 213.5
230 118.5 273 141.7 316 165.3 359 189.4 402 214.1
231 119.0 274 142.2 317 165.9 360 190.0 403 214.6
232 119.6 275 142.8 318 166.4 361 190.6 404 215.2
(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.