The author makes a study of the breezes along a mountain slope in a similar way to what was adopted in his previous paper on “Land and Sea Breezes.” In the circulation due to heat in such low layers, the surface friction seems to play its part remarkably. The calculated values of the wind velocity seem to be consistent with the observed ones, if an appropriate value of the frictional coefficient is taken. It is also concluded that the level of the counter-current goes up higher, as the angle of inclination becomes smaller, which the wind velocity near the surface does not make a great change. Finally, the author suggests a season why the average wind vector revolves daily at an observing station situated in the inland plain.
The diameter of the long branch tube is enlarged as compared with that of the ordinary siphon barometer, and the diameter of the tube is even more enlarged at the surfaces of mercury, but the mercury does not break or run at any inclinations, and the force with which the mercury knocks the closed end of the tube when the tube is inclined is weakened. The height of the column of mercury is measured with small parallax by the aid of two cylinders fixed to the main scale and vernier, covering the tube at the surfaces of the mercury. By these improvements, this barometer could be made to show the same accuracy as that of the Fortin barometer, with less quantity of mercury. It is more convenient to be carried round, and is not so often in trouble as the Fortin type.
Previously, the author statistically studied the influence of weather on the mental state of man by means of some social phenomena, and has in this paper ascertained that there are found some influences of weather on the mental state in the fire statistics.
Making use of the method of random walk, the probability law describing the distribution of matters emitted from a fixed point is theoretically determined, under an assumption that the phase angles of elementary waves from which velocities of matters are composed take random values and they are independent with each other. The theoretical probability function thus obtained is normal to a good approximation. Furthermore the standard deviation of matters is determined in close connection with the spectral distribution of energy of the turbulent field, in which particles are floating.