Quotes:Ashburner, John
Zirkoff, Boris
Ashburner, John (1793-1878). Although H.P.B. does not actually refer to any specific work by this author, she most likely had in mind one of these two: Facts in Clairvoyance... with Observations on Mesmerism, etc., London, 1848; and Notes and Studies in the Philosophy of Animal Magnetism and Spiritualism, etc., London, 1867.
Source: Boris de Zirkoff, «H. P. Blavatsky Collected Writings», vol. 4, p. 620