Treed By A Tiger.

slowly away ; and I drew as long a breath as if I'd been five minutes under water . " « AA ellyou might . " " As soon as he was gone , I came down from the tree ; and what do you suppose was the next thing I did ?"

" Roused your men , and went after the tiger , and shot him . " " You ' ve hit it , " says my friend , laughing ; " and I ' ve got bis skin now , and a very fine skin it is . But I wouldn't go over that time in the tree again to be made Governor-General of Turkestan ! Ostap , more tea . "

Does The Earth Receive Heat From The Sun?

DOES THE EARTH RECEIVE HEAT FROM THE SUN ?

EVIDENCE vm-sus THEORY . "H OT" is only a comparative term , for when anything is said to be hot or cold , it only means that the body is hotter or colder than something else . Yet , for the purpose of consideration in this paperit

, must be admitted that ice is cold , and that the rays issuing from a fierce coal fire are hot ; that when the thermometer and other like instruments , as well as our own sense of feeling , indicate great heat , that heat is present ; that when the

thermometer sinks to zero , or lower , and no means we possess are sufficient to discover heat , then it must be admitted to be absent , for if we are to assume an existence which cannot be proved , then we are basing our belief upon theory instead of evidence .

The substance of the supposed evidence offered by those who advocate or affirm that heat does come from the sun , is as tollows : —

1 st . That the sun ' s heat ripens the corn ; causes all the animal and vegetable kingdoms to flourish ; produces evaporation of the waters of the earth—and in the tropics ls so intense that the very ground itself feems to be on fire . In confirmation that

it is veril y the sun's heat which produces aU these effects , they refer to the difference of the temperature which results - ° mthe sun being hid by clouds ; or , more striking ly still , they refer to the eomparatlve readings of the thermometer when under a vertical sun , and at midnight . ^ nd . That by exposing a flat shallow

vessel , containing mercury , called a pyrheliometer , to the rays of the sun , they say , the actual amount of heat radiated may easily be ascertained ; and it has been estimated that the earth receives from the sun during a year sufficient to heat an ocean of fresh

water covering the whole surface of the earth , 66 miles deep , from the temperature of melting ice to the temperature of ebullition , and as the earth only receives one 2 , 300 , 000 , 000 th of the total radiation , it is estimated that in one year the heat

given out by the sun is equal to that which would be generated by the combustion of a layer of solid coal entirely covering the surface of the sun , seventeen miles in

thickness . 3 rd . That the sun is seen to be a vast globe of fire , with flames issuing from its surface , and that heat must come from the sun , because if it were to be obliterated the earth would become a frozen barren

mass of matter . It is my object now to advocate an opposite view , namely , that heat does not come from the sun . Professor Tyndall has beautifully described heat as being a " mode

of motion , " and it is also well known that the chromosphere of the sun is in a constant state of the most violent agitation , immense volumes of which rush furiously , thousands of miles per minute , in every conceivable direction and form . I have

, therefore , to suggest that this motion—or , possibly , some other influence emanating from the sun—operates upon the earth ' s atmosphere ( or rather that part turned towards the sun ) , and produces a motion of its constituent parts and the minute

particles of matter held in suspension , and thus heat is generated in and through the instrumentality of the earth ' s atmosphere ; the intensity of the heat produced , depends upon the density and quantity of the atmosphere . Near the surface of the

earth there is greater heat , because greater density . In elevated regions there is less heat , because less density of atmosphere ; and , if this is true , it follows that beyond the limits of the atmosphere there can be no heat , whatever . So that if the earth were

to be deprived of its atmosphere , the same cold and barrenness would result as if deprived of the sun . Consequentl y heat mi ght lie as correctly attributed to the atmo-