Ellis, Original Letters Illustrative of English History (London, 1825-1846).
Ellis used this indication to have an organ pipe made which with one-sixteenth diameter and a wind-pressure of 34 in., at one-fourth Schlick's length, gave f' 301.6, from which he derived a just major third of a' 377, which would compare very well with an old Greek a'.
Ellis offered the suggestion of a much higher pitch for this Cammerton in his lecture "On the History of Musical Pitch," read before the Society of Arts, London (Journ.
Ellis quotes an organ at Lille, a' 374.2, but no other instance of the very low Schlick pitch is recorded, although trial of the French cathedral organs might perhaps result in the finding of examples.
His determinations of pitch by a weighted wire are not trustworthy; Ellis thinks they are not safe within four or five vibrations per second, but gives a mean pitch for this organ, when altered, of a' 395.2.