plan

proposed route for what ???? Telegraph line ? Railway ?

It's possible that this is an illustration from a presentation held on January 27th 1914 by the Professor Joly at the RDS.

It may also feature in this article called "On the investigation of the deep sea deposits" by Professor John Joly. If so, the hydraulic engine was used to take samples of deep sea deposits.

Deep Sea Hydraulic Engine as part of the abovementioned article.

Thomas Mason was apparently in the business of preparing slides for lectures (see the description of some he prepared for Sir William John Thompson for example.) He would probably have been responsible for photographing the engineering drawing for use in Prof. Joly's presentation and that's why it is present in the collection, rather than being of any particular importance itself. (Assuming you're not interested in the history of deep sea deposit sampling.)

Sharon Corbet Flickroonies are always interested! Especially in deep sea deposits:-)

1854 John Arrowsmith Rare Antique Map, Early Town Plan of Gladstone, Queensland Cartographer : John Arrowsmith Title : Plan of the Town of Gladstone Port Curtis 1854 (Water is very scarce in this locality) Size: 22 1/4in x 16 3/4in (565mm x 425mm) Condition: (A+) Fine Condition Date : 1854 Ref #: 82046 Description: Description: This large, rare & important map, a very early plan of the Queensland town of Gladstone by John Arrowsmith was engraved in 1854 - dated - and was published for The Colonial Office Parliamentary Papers, London. The rarity of this map cannot be overstated. Many of these maps by Arrowsmith were printed and published only for the British Colonial Office Parliamentary Papers and would have numbered only in the 100s. John Arrowsmith is considered one of the finest cartographers of the 19th century, famous for producing highly accurate and finely engraved maps in atlases, books & in sheet form, of all parts of the know world. Ironically he is less famous for producing many of the maps that accompanied the British Colonial Office Parliamentary Reports between 1817 to 1890, with two-thirds of the maps being produced by Arrowsmith. These maps were published solely for government review and not public sale. A few of these were subsequently published in Arrowsmiths Atlases and vice versa but a great number of them were not, making many of the maps published for the Parliamentary papers rare and rarely seen on the market. Many of them are not called for in Tooley, Clancy or other important reference material. Source: www.classicalimages.com/products/1854-john-arrowsmith-rar...