Heinke to Lytton
Sepr 22nd 1858 Rt Honble Sir E. Bulwer Lytton

Permit me to bring to notice our patent diving apparatus.
I supply the Royal Engineers at Chatham. They would be found invaluable in British Columbia. The entire work at the new Westminster Bridge foundations are done with our diving apparatus. They have entirely superseded the Diving Bell.
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I should be most happy to furnish Your Excellency with further information if required.
I remain Yr Excellencys
Obt Sert
W. Heinke
103 Gt Portland St
[P.S.] A Diver can work under water 4 or 6 Hours.
Minutes by CO staff
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Acke receipt: saying that it is open to the writer to communicate his system to the Authorities of B. Columbia if he wishes it, but that this Office cannot undertake to do so.
This Diving apparatus might be very useful in the Pearl fishery at Ceylon.
ABd 23 S
Annex dt.
HM S 24
Other documents included in the file
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Draft, Colonial Office to Heinke, 1 October 1858, stating that the proper course would be for him to contact the governor directly.
Documents enclosed with the main document (not transcribed)
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Printed advertisement, "Improved Diving Helmet, Dress & Apparatus, Manufactured by C.E. Heinke, Submarine Engineer."
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Printed certificates awarded to company for improvements to their diving apparatus, presented at the Great Exhibition of 1851 and the Paris Exhibition of 1855.
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W. Hartland, Victoria Dock, to Heinke, 4 May 1858, testifying to the effectiveness of his apparatus.
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Charles Manby to Thomas Jackson, 29 June 1858, highly recommending the effectiveness of Heinke's apparatus.
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A. Pestchouroff to Heinke, 17 June 1858, testifying to the sound and careful workmanship of his apparatus.