Sept. 4, 1885.] 



♦ KNOWLEDGE 



Ellis, member of the Roy:i\ .Society of London, this 

 learned scientist treats of the sonorousness of singing 

 stones. " We know not up to the present," says he, 

 " whether the sonorousness is affected by the form, bulk, 

 chemical mass, or molecular constitution. It is vcrv 

 probable that these stones have internal strnctui'is tli.it 

 differ from each other — the sound 





strv 



eighbou 



weighs 4i lb., while the one that gives the half tone (f 

 this weighs 9. This large flint is imnu-diatLly followed 

 by one of one ounce, that finds its similar in weight only 

 at the end of the series, although the difference in sound 

 is considerable. A three ounce stone gives exactly the 

 same note as another that weighs but 6,000 grains. It will 

 be seen that we have surprising anomalies here to j.uzzle 

 physicists. — G. Tissandier, in La Nature. 



THOUGHT AND LANGUAGE. 



By Ada S. Ballin. 



the fact that those 

 111 the race and in 

 lu cases of degenera- 



Moi-n. 



"Wln.kii u. ., Ns the old editor of Co^Hio*, "whellui 



ill eai,n ,U , \, .1 .mg in search of relics of the Stone A CI \liliu_'1 1 li l^ i 



we shall noi hud . I bcries of attuned flints y Why m 13 fuiilHi p.iiuiiln- I 



not the flint, which was the first arm, the first tool, of , belong to this class, 



jire-hi.storic man, have also been his first musical instru- " F. ¥. G.," in the 



ment?" ! child, aged nine, wh 



M. Baudre thinks that the reason no musical instru- I whom cm -"i •' ■■" 



inonts have bein found in prehistoric strata is that | woi.N 1 



searchers have not occupied themselves \\ ith native flints, had i 1 ' 



hut only carved ones. | qumiK i -1 ' 



The following are .some of the pec uliarities of these , teariii- dotlmi,', lav 



a.ttuned gtouci The stone that miits the greatest tone Such fits last about a 



1 all- fours before he 

 •ei t , and, OLCisionallj", 

 er be taught to walk 

 Sometimes the jiatient 

 ,'e of evolution lo that into 

 iiustincts and \ roj ensities 

 for the use of hnguage. 

 . 1_\, not been able to obtain 

 it "that the following cases 



, Feb. 21, ISSfi, mentions a 

 IP of four or five, none of 



