266 Telephonic Audibility. [May, 
Sound would therefore, to travel from Equator to Pole, 
use 25,200 1*062 more time than the (theoretical) ohm, 
or 23,730 seconds, which figure, in its abstract form, also 
expresses the mean of the radius into the solar distance ; or 
the “ product ” between audibility and non-audibility, of 
eledtro-static capacity with eledtro-magnetic resistance, of 
indudtion obstructing telephonic communication. 
The Earth’s surface presents 2*83 + 3*83 of condudting 
ocean against 1 3'83 of ill-condudting resisting land, 
ocean and land being both surrounded by the dieledtric air 
permeated by condudting water-stuff, raised, circulated, and 
precipitated by the contentions and compromises of Sun 
and Earth. 
The same relation, 2'83 : 1, is represented by the division 
of the quadrant from the Equator to the polar circle or 
zone, and from there to the pole : circle and zone being the 
astronomical mean for meteorological conditions ; the belt 
and the region of reversion in the terrestrian rotatory 
system and constitution, in the circulation of atmosphere, 
ocean, and vibrating solid. 
When the “ product ” is less than the (theoretical) ohm 
into the time sound would take to travel from the Equator 
to the polar circle, such time being — 
7,390,000 met. 396 met. = 18,600 seconds, 
or less than 18,600 i'o62 = 17,800, telephonic audibility is 
“ commercial ” for the sound untrained ear. 
When the “ product ” is equal to the quotient of the 
1*062 seconds the ohm, into the time sound would take to 
travel through the distance from Equator to polar circle, 
plus the whole diameter of that circle or zone, through 
12,610,000 metres, or to — 
(12,610,000 -r 396) 4- 1*062 = 30,000, 
audibility is absolutely at an end. 
The solution of the problem would therefore consist in 
preventing the “ product ” from becoming the equivalent of 
absolute polar reversion. 
An additional remark might be useful for the appreciation 
of the true nature of electricity and of molecular physics. 
A farad is a quantity founded on the reciprocity of natural 
bases, but affeCted by slight defeats originating from the 
