“VII. To strike with a crushing, destroying power, NAG and HNAG.
“VIII. To strike with a strong, rude, sharp, penetrating power, RAG or HRAG.
“IX. To move with a weighty strong impulse, SWAG.”
[135] Cfer. Wullschlaegel: “Kurzgefasste Neger-Englische Grammatik” (1854), and “Deutsch-Neger-Englisches Wörterbuch, nebst einem Anhang Neger-Englische Sprüchwörter enthaltend” (1856).
[136] Helmholtz: “Die Lehre von den Tonempfindungen,” 3rd edition (1870).
[137] Speaking accurately a musical note is a tone only in so far as its quality or timbre is taken account of.
[138] The fact can easily be tested by Captain Galton’s whistle. According to some authorities, however, it requires less than eight and more than 24,000 vibrations per second, to produce no effect upon the auditory nerve.
[139] “Lectures,” ii. 8th edition (1875), p. 111.
[140] Helmholtz: “Die Lehre,” &c., p. 143.
[141] Serpents have no voice in the proper sense of the word, as they have no vocal chords; the hissing sounds they produce being caused by a mere forcible breathing through a soft glottis.