y 



CONTENTS 



Original Papers 



Page 

 Mathematics. — Account of researches in the algebra of physics. II. A. 



Macfarlane : . 363 



Meteorology. — On the diurnal variations of atmospheric pressure. W. J. 



Humphreys 372 



Meteorology. — Note on the influence of clouds on the distribution of solar 



radiation. H. H. Kimball and E. R. Miller 377 



Botany. — Supplement to the Lichen flora of the Santa Cruz Peninsular, 



California. Albert W. C. T. Herre 380 



Abstracts 



Physics 387 



Electricity 388 



Geology 389 



Botany 390 



References 392 



Proceedings 

 Geological Society 393 



