160 Earthquake Commotion and Sun Spots . [March, 
of October, 1870 — could never be disregarded as truly 
intimating the epoch of a maximum of sun spots. 
Lastly, as all would be discoverers, I often ask myself 
whether a sun spot table, constructed on my plan, has been 
ever previously attempted. I cannot, myself, answer this 
question, but I find indications of the line of research are 
extant in Prof. Karl Fuch’s “ Die Vulkanischen Erschein- 
ungen der Erde ” for 1865, and in an article on the earth- 
quake and volcanic tremors in Brazil, by M. Poey, a writer 
who has done much to clear up the difficulties of connecting 
natural phenomena with the sun spots. 
