16 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 134 
constant measures then available had many breaks in the continuity 
of the daily observations, I was constrained to use 10-day and monthly 
Po eee a ee 
eee te Ly Le | een a oe 
Mme eee te ls 
Sl ee HR in eA ete at ated bot pe de, 
ake ae a De ee 2aal | | 
Som ae lee a S 
wee oe 
Lt, TA ye fe 
tesa Ss dea A A BY mer 
se De ir Fat A n= 
ea A, cl 
er AA ACR 
ate eves lesen ved Sheltie. EE Mo Vd 
Fic. 7—Basal pulse rates (Marshall). A, Mean march of 212- day period for 
3 years. D, Period of 74% removed. E, Period of 2% removed. B, Period of 
21% removed. C, Period of 74% removed. F, Period of 22%1 removed. G, Remain- 
ing period of 21347, not removed. Seven months, 89 X 273 months, is 213.07 days. 
Therefore all seven periods found are submultiples of 273 months. 
mean values in my work. As she had an unbroken daily record of 
almost 1,100 days, she employed daily values of pulse. 
Plotting these in their complete continuity, her figure, like my solar- 
constant figure, resembled a wide ribbon, with its many closely lying 
ups and downs. But the pulse values, not being subject to accidental 
errors, were more satisfactory to investigate than the solar-constant 
values in which accidental errors were of about the same magnitude 
