biology

The concept of causality in relation to vitalism

This hitherto unpublished part of the early work of Gerbert Grohmann (1897-1957) presents the philosophical contribution belonging to his doctoral thesis in natural sciences submitted in 1923 to the philosopher Hans Driesch (1867-1941) at the university of Leipzig, Germany.… read more

The history and problem of the idea of evolution

The usual picture of the phylogenetic process is that there were first single-celled bacteria-like organisms followed by multicellular,»lower«and later»higher«, rather complex and differentiated forms of life. This succession of evolutionary changes has often been called»evolutionary… read more

Wing pattern; ofbutterflies (Lepidoptem) as mirrors ofenvironmental colours and light

Research in the tropics of the southern continents as well as in the temperate regions during the last decades has reve.tled the intimate correlatiun of wing colourstion and Wing pattern in butterflies with the corresponding features of their… read more