N. Stenon is one of the most outstanding and versatile naturalists of the XVII century. Associated with the name of this Danish scientist: establishing the first law of crystallography (the law of constancy of angles on crystals), laying the foundations of scientific geology (generalizations concerning the earth's layers and their conditions of occurrence), the origin of paleontology, a number of brilliant discoveries in the field of anatomy and physiology (studies of salivary glands, lacrimal apparatus, brain structure and heart activity)...