Learn The Abc Of Science Before You

It Is Not Accidental That All Phenomena Of Human Life Are Dominated By The Search For Daily Bread - The Oldest Link Connecting All Living Things, Man Included, With The Surrounding Nature.

It Has Long Been Known For Sure That The Sight Of Tasty Food Makes A Hungry Man's Mouth Water; Also Lack Of Appetite Has Always Been Regarded As An Undesirable Phenomenon, From Which One Might Conclude That Appetite Is Essentially Linked With The Process Of Digestion.

The Digestive Canal Represents A Tube Passing Through The Entire Organism And Communicating With The External World, I.e. As It Were The External Surface Of The Body, But Turned Inwards And Thus Hidden In The Organism.

As Was To Be Expected, The Discovery Of The Nervous Apparatus Of The Salivary Glands Immediately Impelled Physiologists To Seek A Similar Apparatus In Other Glands Lying Deeper In The Digestive Canal.

Appetite, Craving For Food, Is A Constant And Powerful Stimulator Of The Gastric Glands.