Abstract
1. The leaking micrbarograph is better used of as a variograph- the recorder of the time rate of atmospheric pressure-if Poiseuillet's constant is ade- quately adopted. It depends solely on the leaking rate, as to the question whetherit serves as a variograph or a microbarograph. 2. The motion of the leaking microbarograph was dynamically solved to the full. The consequence was that the recording of pressure variation begins to be disturbed by the natural vibration of the instrument when the period of the minor fluctuations of the barometric pressur becomes quick and approaches to the natural period. If otherwise, the statical treatment of this problem is sufficiently accurate. 3. The liquid in the floating basin plays sometimes the important part and cannot be neglected in the determination of the motion of the microbarograph
