Sarcology – study of fleshy parts of the body Satanology – study of the devil Scatology – study of excrement or obscene literature Schematonics – art of using gesture to express tones Sciagraphy – art of shading Scripophily – collection of bond and share certificates Sedimentology – study of sediment Seismology – study of earthquakes Selenodesy – study of the shape and features of the moon Selenology – study of the moon Semantics – study of meaning Semantology – science of meanings of words Semasiology – study of meaning; semantics Semiology – study of signs and signals Semiotics – study of signs and symbols Serology – study of serums Sexology – study of sexual behaviour Siderography – art of engraving on steel Sigillography – study of seals Significs – science of meaning Silvics – study of tree's life Sindonology – study of the shroud of Turin Sinology – study of China Sitology – dietetics Sociobiology – study of biological basis of human behaviour Sociology – study of society Somatology – science of the properties of matter Sophiology – science of ideas Soteriology – study of theological salvation Spectrology – study of ghosts Spectroscopy – study of spectra Speleology – study and exploration of caves Spermology – study of seeds Sphagnology – study of peat moss Sphragistics – study of seals and signets Sphygmology – study of the pulse Splanchnology – study of the entrails or viscera Spongology – study of sponges Stasiology – study of political parties Statics – study of bodies and forces in equilibrium Stemmatology – study of relationships between texts Stoichiology – science of elements of animal tissues Stomatology – study of the mouth Storiology – study of folk tales Stratigraphy – study of geological layers or strata Stratography – art of leading an army Stylometry – studying literature by means of statistical analysis Suicidology – study of suicide Symbology – study of symbols Symptomatology – study of symptoms of illness Synecology – study of ecological communities Synectics – study of processes of invention Syntax – study of sentence structure Syphilology – study of syphilis Systematology – study of systems