312 Screntific Intelligence. 
the following manner :—A solution _ the iodide in carbon disul- 
phide, after jt has been exposed for some hours to the action of 
the sunlight, undergoes partial ss a ag some iodine being set 
free, this ‘solution i is then distilled over a water bath, and the pro- 
ate of 4°768. That ee are true isomers of the other forms 
it the monoclinic iodide in pure carbon disulphide the hex- 
onal iodide is obtained, as —— a small quantity of minute rhom- 
bic plates, whose.ang] e 60° and 120° om these facts it 
he suggestion is made that possibly the supposed orthorhom- 
bic — may prove upon more exact determination on better 
material, to be really monoclinic, so that the difference between 
the two Yellow varieties that have been = would exist ee | 
in habit. This would not, however, affect the general result 
reached as to the sorte of their form to the Pea ae kind and 
the reason for its existen 
The “ molecular snieling® which has been ‘explained is quite dis- 
tinct from the “interlaminar macling,” described by the orale in 
his paper upon the Vermiculites, and alluded to above. The la 
involves no essential change in "substance ; the former teeter se a 
15. The Telephone, an Instrument of Mbcthetont —The “applica- 
tions to which the te beat aye may in future be put cannot yet 
all foreseen ay had its value shown to me ina 
remarkable ae hi 1 tir a Rieribo-cloctrie: intermittent current 
by drawing a — end of copper wire alon ng a rasp completing the 
cirenit. A tel ephone was ae into the circuit, in another room, 
and every time that the wire was drawn along the rasp a hoarse 
eae Sine: was heard in the telephone. 2. I used a thermopile 
n burner shining on it from a distance of six feet. 
The curr ent was rendered intermittent by the file, and the sound 
was most distinctly heard. A Thomson’s reflecting galvanometer 
was introduced into the circuit which showed that the currents. 
