D. J. SCOURFIELD ON LOGARITHMIC PLOTTING. 423 



assumed date has been taken early in December, instead of going 

 to Apstein's next date of collecting, in the middle of January. 



It does not seem necessary to refer here to the details of the 

 development exhibited by the organisms selected for illustrating 

 the use of logarithmic sectional j>aper, as the curves speak pretty 

 plainly for themselves. Moreover, the present notes were not 

 penned to enter into any discussion of biological facts, but simply 

 to call the attention of biologists, and especially of those engaged 

 in plankton work, to a method of plotting results which has been 

 found very serviceable by the writer. 



