464 KANSAS CITY REVIEW OF SCIENCE. 
These were broken, however, by lucid intervals. The leading feature of all his 
aberrations seemed to have been reduplication. He doubled the number of his 
sisters, his nurses, and his medical attendants. When he returned to himself 
and could trust his memory and senses he found two things — first, what he had 
been accustomed to call aphasia; secondly, that he could not write as he in- 
tended. The tendency to reduplication, which was obvious in his delusions, 
was as clear as need be in his writing, and the trick of including otiose letters in 
familiar words lasted for some time. It was probably the trace either of mental 
stammering or of diplographia, depending upon want of synchronism between 
the two hemispheres of the brain. That such a condition of the ocular muscles 
occurred in drunkenness was well known. 
Mr. E. P. Culverwell read a paper on the probable explanation of the effect 
of oil in calming waves in a storm. He said when the surface of the sea had' 
become smooth after a storm it was very common for long rollers to break on a 
sand-bar. If there were no wind and the sea was glassy, these would not break 
until quite close to the shore, even though the ordinary theory pointed to their 
breaking earlier, unless there was a force directed opposite to that of their motion. 
When exerted on the waves, such a force might be supplied by the wind; but if 
it rose in any direction the waves broke much sooner. This result was, there- 
fore, due to some secondary effect produced by the wind pressure, and not 
directly by the pressure itself, and it was to the ripples produced on the surface, 
which disturbed the wave motion, that the speedy breaking was to be ttributed. 
It was, however, a direct result of the theory that the ripples depended on sur-^ 
face tension for their propagation, and could not exist in large amount on the 
oiled surface. It was also evident that the hold of the wind on the wave was 
greatly decreased by the absence of ripples, and thus the oil acted both to pre- 
vent the wind having much effect on the surface, and also to modify the motion 
of the water in the wave. 
Professor Stokes read an important paper by Dr. Huggins on coronal photo- 
graphy without an eclipse. In a paper read before the Royal Society some 
time back. Dr. Huggins had shown that it was possible by isolating, by means of 
properly chosen absorbing media, the light of the Sun in the violet part of the 
spectrum, to obtain photographs of the Sun surrounded by an appearance dis- 
tinctly coronal in its nature. These researches have been continued, using a 
reflecting telescope, by the late Mr. Lassell, and a film of silver chloride as the 
sensitive plate, on which the photograph is taken. These plates are sensitive to 
the violet light only, and therefore it was unnecessary to use absorbing media, 
which had proved a source of difficulty, to sift the light. Fifty photographs in 
all were taken and examined afterwards by Mr. Wesley, who made drawings of 
them for the paper. The details shown agree well with the photographs of the 
corona made during the late solar eclipse, the agreement being specially marked 
in two cases, dated April 3d and June 5th. The photographs have been seen by 
the observers sent to Caroline Island to observe the eclipse, and one of these 
writes that Dr. Huggins's coronas are certainly genuine up to 8' from the Sun's 
