29 OCTOBER 1881, Page 13

THE NOISE OF NIAGARA FALLS.

[To THE EDITOR OF THE "SPECTATOR."] SIR,—In your review of Mr. Marshall's "Through America," you allude to the softness of the tone of the sound of these Falls, and intimate that probably its musical character could be determined by an expert. It may interest your readers to know that this has already been done by Mr. Eugene Thayer, whose article on the subject is in the February number of Scrib- ner's Magazine. Ignorant of the difference in height between the two Falls, Mr. Thayer asserted that one was higher than the other, merely from its musical note. I have given an ab- stract of his article in an account of my visit to Niagara in winter, in Nature for March 31st.

May I add, in conclusion, my emphatic testimony (as that of one who has recently travelled over the same ground) to the ex- cellence of Mr. Marshall's book ? The illustrations which you praise are chiefly most faithful copies of photographs, dupli- cates of which I possess.—I am, Sir, &c.,

Wm. LANT CARPENTER.

6 Crbytou Terrace, Southend, Essex, October 24th