But, with empty stomachs, there is also at times a heart-hunger, which pleases a higher sense and closes the eye to gastric wants.
"My Attainment of the Pole"
Frederick A. Cook
The necessity for the presence of an acid in the stomach contents in order that digestion should go on led to the conclusion that the acid was the most important constituent of the gastric juice.
"Makers of Modern Medicine"
James J. Walsh
His researches in Berlin on this interesting and important subject, which was practically a complete mystery at that time, had been mainly concerned with the gastric juice.
"Makers of Modern Medicine"
James J. Walsh