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'File A/5 Pearl fisheries of Persian Gulf' [‎27r] (53/62)

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The record is made up of 1 file (31 folios). It was created in 10 Mar 1904-19 Jun 1918. It was written in English. The original is part of the British Library: India Office The department of the British Government to which the Government of India reported between 1858 and 1947. The successor to the Court of Directors. Records and Private Papers.


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V//r e
"the motor with the bore and stroke"
Marine Kerosene-Gasoline-Producer-Gas Engines
' February 3ra,
r.U.TCL.CO. A.B.C. A-TT C. ST? CD-
.r'"% 1
1 /
Messrs. Robert V/onkhaus & Co
EtJirain Islands,
• *
We have recently brought out a combined Compressor
and -fropelling itotor, especially designed for and adapted to the
Pearl Fishing Industry, and we enclose, herewith, our Bulletin #24,
which contains full particulars.
Theaim of this special nmchinery is:-Firstly to greatly
increase the prodoctios and efficiency of each boat, and secondly,
to replace man-power by motor power, thus reducing operating ex-
pensesto a mere trifle.
This machine plant can be supplied in three different forms,
viz:- Motor with air compressor alone.
Motor with air rcompressor and reversible "WOLVERIEE" Propeller
Motor with air compressor andsolid propeller driven tnrji our
"WOLVERIIJE" Reversing Clutch.
The prices of these different outfits are shown enclosed Bull.#24,
page 3, and they are strictly net, the Proposed motor is of 5 EHP
but larger power can, of course. Toe supplied if required.
The great advantages of this special outfit will be at once
apparent to you,aiid they have, in fact, been demonstrated and fully
recognised by the shell fishing concerns on the various pearling
The motor can be successfully operated on either benzine or
paraffin, with a very low fuel consumption. The whole plant being
exceedingly simple in design, it can be handled by ordinary fisher
men, without the assiatance of competent engineers.
We shall be very glad to have you consider this matter thor
oughly, and if interested, please let us know, and we will with
pleasure give you any additional data you may wish. Deliveries
can usually be made in libout two weeks from receipt of order.
Thanking you for your interest, and awaiting the favor of
your reply,, we are, dear sirs.
Yours very truly,

About this item


The contents of the file relate to the British Government’s concerns over growing British and international interest in the Gulf’s pearling industry, hitherto almost exclusively exploited by the region’s indigenous inhabitants.

1) The first half of the file (folios 2-13) comprises copies of Government of India correspondence published in 1904 and 1905, which discuss Britain’s historic role in the Gulf in relation to the pearling industry. Themes covered include: Britain’s duty to protect the pearl banks for the benefit of the Arab pearl divers, acknowledgement of growing national and international interest in the pearl banks, the extent of territorial waters, and the likely result of any legal challenges to Britain’s refusal to allow foreign interests the opportunity to exploit the Gulf’s pearl banks.

2) Correspondence relating to an enquiry by a German businessman, concerning the pearl trade in the Gulf (folios 15-17).

3) Printed copies of correspondence (folios 20-23) from the Persian Gulf Historically used by the British to refer to the sea area between the Arabian Peninsula and Iran. Often referred to as The Gulf or the Arabian Gulf. Political Resident A senior ranking political representative (equivalent to a Consul General) from the diplomatic corps of the Government of India or one of its subordinate provincial governments, in charge of a Political Residency. (Lieutenant-Colonel Percy Cox) and the Bahrain Political Agent A mid-ranking political representative (equivalent to a Consul) from the diplomatic corps of the Government of India or one of its subordinate provincial governments, in charge of a Political Agency. (Captain Charles Mackenzie), dated 1910, concerning the increasing trade in oyster shells in the Gulf, used for the production of mother of pearl. A drop in the numbers of oysters being fished is attributed to the mother of pearl industry. A German firm based in Bahrain, Wonckhaus & Co., is identified as a key exporter of oyster shells at Bahrain.

4) A letter (folio 27) intercepted by the Political Agency An office of the British Government and, earlier, of the East India Company. in Bahrain, from the Secretary of the Wolverine Motor Works, U.S.A., to Robert Wonckhaus & Co., dated 3 February 1915. The letter and accompanying leaflet (folios 28-29) relates to Wolverine Motor Works’ new combined compressor and propelling motor, designed specifically for use in the pearl fishing industry.

5) A typewritten extract from the Times of India Illustrated , dated 19 [month missing, presumed June] 1918 (folio 30) reporting on rumours that German financiers are buying up all the pearls available in Britain and France.

Extent and format
1 file (31 folios)

The contents of the file have been arranged in approximate chronological order, running from the earliest items at the front of the file to the latest at the end.

Physical characteristics

Foliation: The file is foliated from its front cover to inside back cover, using circled pencil numbers in the top-right corner of each recto The front of a sheet of paper or leaf, often abbreviated to 'r'. . There is an additional pagination system running throughout the file.

Folio 29 is a fold-out.

There is minor insect damage to papers throughout the file.

Written in
English in Latin script
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'File A/5 Pearl fisheries of Persian Gulf' [‎27r] (53/62), British Library: India Office Records and Private Papers, IOR/R/15/2/3, in Qatar Digital Library <> [accessed 17 February 2020]

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