More locations for Industrious Fleas

A couple of book references found via google books indicate that L. Bertolotto also performed at 100 Piccadillyin London and also in Plymouth. There is also some clarification on which of the Royals patronised the exhibition.

Passages in Foreign Travel
By Isaac Appleton Jewett
Published 1838
C.C. Little and J. Brown

Page 75 "The industrious Fleas, patronized by their Royal Highnesses, the Duchess of Kent and the Princess Victoria, may now be seen at No. 100, Piccadilly"


A history of Plymouth By Llewellynn Frederick W. Jewitt, Llewellynn Jewitt
Published 1873
W.H.Luke

Page 409 "Signor Bertolotto's exhibition of the Industrious Fleas opened in Plymouth, and cause a good deal of attraction"