FIRST STAR LESSOXS 

 Bi RauAii A riuLiui 



ImE con'.ttlhtKms mcliukd m the twenty four mi 

 of this tiic lie numberLd thioushout is follow 

 (tUnimesUii, ■■ ^ - 



in is possil k 

 giouj m? k (1 

 1 I ■=(! J/uio tl 

 (a the P 



LVEFFICACT OF THE EccALYPTCS.— Notwithstanding the positive 

 statements that have been made as to the suitability and valne of 

 plantations of Eticalyptus globulus in swampy and marshy districts, 

 some scepticism has been manifested upon the point, and some 

 time since a paper attributed anything but favourable results to 

 the experiments made in this direction in Italy. In a recent report 

 "n the Lucknow Horticultural Gardens {Gard. Chron.) Dr. " 



records i 



i-.xperience, a 



s a wonder that t 



* Indeed, I know that the children of the late Principal of the 

 Hartford Deaf and Dumb Asylum, who had grown up in the 

 asylum, and knew the peculiar language of the inmates as 

 familiarly as their English, could always tell what their father 

 was thinking of, as he walked up and down in meditation, bv 

 watching hia hands : his fingers involuntarily formed the sign's 

 which were associated in his mind with his subjects of thought ; 

 while, at the same time, doubtless, he imagined also their spoken 

 signs" (p. 213). ^ ^ 



m the picictaa adopted hy Air 1 ructor, 

 such a course ^ under the circum 



tl iM.1 Ul w (1 Is 1-, down-ftiids It is ti irtstnt n 



in&wer to this question that I im now 'i\ritmg 



ABC D E F 



I ^ I 

 A F 



Fig 2 



In the farst place, we ire aware that the atmosphere 

 IS sometimes positi\elj at othei times negatively 

 chaiged If thertfort v,e determine in our own mindt. 

 thxt the dischiiae cm cnlv tike place m one direction, 

 positive to negative oi conveistly negitue to positive, 

 then it IS cleii -*% l must c( nctde the possibihty of a dis 

 chirge r the tilth is ntU is to it 2soi\ ho^never 



greit m i> be oui levLience foi the single oi double fluid 

 theories neithei cf them is c^pable of htlpmg us By 

 the single-fluid theory, the discharge should always be 

 in one direction (electrically speaking). But the adherents 

 of this theory are unable to determine to their own satis- 

 faction whether the plus or surcharge exists ia the posi- 

 tive or negative state. "VMiile it has generally been 

 claimed that a positivelj- electrified body has an excessive 

 charge, there are not wanting those who maintain that 

 this excessive charge belongs to the negatively electrified 

 body. By the double-fluid theory we are asked to 

 believe that when a discharge takes place it is 

 accomplished by the mutual exchange of a por- 

 tion of the charge on each of the oppositely 

 electrified bodies. Now this would mean that a dis- 

 charge of positive electricity should take place from 

 the positively to the negatively charged body, and that 

 at the same time a discharge of neLTutivu electricity 

 should travel from the negatively i^ the jinr,itively 

 charged body. This, if it means anythiiiL:, means that 

 two distinct discharges, starting simultuiiei.usly fr.mi the 

 two charged bodies, are necessary to produce a state of 

 neutrality. But, inasmuch as the performance of work 



