CONTENTS 



Original Papers 



Mathematics. — A trigonometric computer. F. E. Wright 29 



Botany. — The Venezuelan mahogany, a hitherto undescribed species of the genus 

 Swietenia. H. Pittier 32 



Biology. — The Bioclimatic I^aw. Andrew D. Hopkins 34 



AnSTRACTS 



Apparatus j 41 



Physics 42 



Spectroscopy . 44 



Inorganic Chemistry 44 



Analytical Chemistry 45 



Geology and Paleontology » 46 



Anthropology 47 



Chemical Technology 48 



Ceramics 49 



Proceedings 

 Geological Society 50 



SciENTiPic Notes and News 54 



