This was also confirmed later, when we performed an œsophagotomy on the dog, and carried out sham feeding in typical form. Here follows one of these experiments taken from Dr. Lobassoff’s article.
The first drop of juice appeared from both cavities during the sixth minute after commencing the feeding, which was kept up for half an hour. The further course of the secretion was as follows:
| Hour. | Miniature stomach. | Main stomach. | ||
|---|---|---|---|---|
| Quantity of juice. | Digestive power. | Quantity of juice. | Digestive power. | |
| c.c. | mm. | c.c. | mm. | |
| 1st | 7.6 | 5.88 | 68.25 | 5.5 |
| 2nd | 4.7 | 5.75 | 41.5 | 5.5 |
| 3rd | 1.1 | 5.5 | 14.0 | 5.38 |
| —— | —— | ——— | —— | |
| 13.5 (total) | 5.75 (mean) | 123.75 (total) | 5.5 (mean) | |
The secretion came to an end in both stomachs at the same time.
The above is represented in curves in Figs. 2 and 3, the scale on which that for the main stomach is drawn being ten times less than that for the small. As you see, the progress of secretion is identical in both.
The existence of a fistula leading into the large stomach affords us also the possibility of performing an experiment upon our dog which is exactly the converse of the sham feeding experiment, and which constitutes a real experimentum crucis. While in sham feeding, we had only, so to speak, the beginning of digestion before us, we are now able in our cross experiment to start at the continuation of this beginning. For this purpose it is only necessary to bring the food into the stomach through the fistula, without attracting the dog’s attention. Since in this experiment it is above all necessary not to excite the dog’s appetite, it is best to carry out the procedure on the sleeping animal. I may add at once, however, that the same result can be obtained on the waking animal, only the process must be performed unnoticed, and the animal’s attention must be diverted from thoughts of food.
Figure 2.—Curve of secretion from the miniature stomach.
Figure 3.—The same from the main stomach reduced ten times.