Pakistan Cave Research & Caving Federation cave & karst research by encouraging original exploration, organizing educational, scientific, recreational caving, and cave rescue conferences and expeditions. PCRCF is a member of the International Union of Speleology (UIS), through its founder and President Hayatullah Khan Durrani, Chairman Malik Abdul Rahim Baabai and media officer Mohammad Abubakar Durrani. In 1990 a group of Chiltan Adventurers went into Kach Mountains Balochistan on the invitation of some local people on abet, they explore, searched a small cave in the middle of vertical rock, Formally to further develop Cave exploration sports, Education cave mapping, surveying, Research and finding new caves, the idea
History of scientific method authority of others. Knowledge must be based on experience. In the mid-19th century Claude Bernard was also influential, especially in bringing the scientific method to medicine. In his discourse on scientific method, "An Introduction to the Study of Experimental Medicine" (1865), he described what makes a scientific theory good and what makes a scientist a true discoverer. Unlike many scientific writers of his time, Bernard wrote about his own experiments and thoughts, and used the first person. William Stanley Jevons' "The Principles of Science: a treatise on logic and scientific method" (1873, 1877) Chapter XII "The Inductive or Inverse Method",