A new frog species?

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abi cryerhall

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Aug 17, 2016, 4:29:51 AM8/17/16
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Has anyone come across this type of sandstock brick and frog before? 

Inline image 2

These are samples from a section of arched brick drain below George Street (near Grosvenor) in Sydney. 

I have not come across this particular frog type before, or indeed been lucky enough to find a reference in published sources I have access to.  

Brick measurements are L: 210mm Width: 105mm Height: 55mm


Cheers, 

Abi Cryerhall
Principal, Artefact Heritage

Iain Stuart

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Aug 17, 2016, 5:24:10 PM8/17/16
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Abi,

 

Not sure whether it is a crude fish or some sort of shoeprint (perhaps too small). The problem is associating the frogs with a known manufacturer which is really difficult. The size of the bricks and from what I can gather of their manufacture points to “early” but it is difficult to be precise.

 

On a related point I am moving, with glacial speed, to recording bricks digitally using photogrammetry in order to have a collection of brick images as PDF’s rather than having to lug the bloody things around. I am thinking that once I get the workflow a bit more sorted that this would be a useful approach for all building materials which generally get left at the site as they are too bulky and similar to drag them all back to the lab.

 

Cheers

 

Dr Iain Stuart

 

JCIS Consultants

P.O. Box 2397

Burwood North

NSW 2134

Australia

 

(02) 97010191

Ia...@jcis.net.au

 

john...@ozemail.com.au

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Aug 17, 2016, 8:46:10 PM8/17/16
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Hello,

Nice picture.   I collect brick piccies and also formed the now-failed (if not totally forgotten) "BIG" of Sydney district .. the "Bricks Interest Group" (which peaked at a high of over six people from memory).

I do believe you probably have a new frog species !

Where is it now?

However it could take the finding of a second one of the same .. to put away somewhere safe as a paratype ..... to be absolutely sure.

Or "to be sure to be sure to be sure" if perhaps made by an Irish convict brickmaker (doubtful .. it looks a bit too young -- and yet there definitely were convicts once working in George Street -- I once worked there myself as a Government/Public Servant ... but much later and WE were well paid and didn't have to work in irons ever .. I worked up the northern end, at The Rocks and am still compiling history for there .. with a theory [by no means entirely mine] on where the rock was that was maybe an early natural wharf ..... and maybe even was where Phillip's lot stepped ashore and later ran up a flag .... not the Jolly Roger .. and not the Stars and Stripe .... but the appropriate criss-crossed flag to claim this fair land for the mad king - George III).

Cheers,

 

John Byrnes


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{OzArch} A new frog species?


Has anyone come across this type of sandstock brick and frog before? 


These are samples from a section of arched brick drain below George Street (near Grosvenor) in Sydney. 

I have not come across this particular frog type before, or indeed been lucky enough to find a reference in published sources I have access to.  

Brick measurements are L: 210mm Width: 105mm Height: 55mm


Cheers, 

Abi Cryerhall
Principal, Artefact Heritage

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abi cryerhall

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Aug 17, 2016, 9:52:04 PM8/17/16
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Thanks Iain.  I was thinking it looked like a shoe print, but we have another which looks like a coffin.  The drain sits within a 1830s-1840s phasing.

Your project to record bricks digitally is a great idea, though you would miss out on the great opportunity for hardship and penance lugging brick samples about offers.

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john...@ozemail.com.au

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Aug 17, 2016, 10:42:12 PM8/17/16
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Hello,

Re collected bricks, I have committed the sacrilege of breaking many in two.

The object of that action was to halve the bulk of the collection .. which resides merely in the backyard.

My wife would never let it come in the house I'm sure -- so I have never even considered that.

They are generally sturdy objects and don't require any great protection from the weather (unlike other precious things such as many Aboriginal carvings).

 

Cheers,

 

 

John Byrnes

 


 


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Thu, 18 Aug 2016 11:36:28 +1000
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Re: {OzArch} A new frog species?



Thanks Iain.  I was thinking it looked like a shoe print, but we have another which looks like a coffin.  The drain sits within a 1830s-1840s phasing.

Your project to record bricks digitally is a great idea, though you would miss out on the great opportunity for hardship and penance lugging brick samples about offers.
On Thu, Aug 18, 2016 at 7:24 AM, Iain Stuart <ia...@jcis.net.au> wrote:

Abi,

 

Not sure whether it is a crude fish or some sort of shoeprint (perhaps too small). The problem is associating the frogs with a known manufacturer which is really difficult. The size of the bricks and from what I can gather of their manufacture points to “early” but it is difficult to be precise.

 

On a related point I am moving, with glacial speed, to recording bricks digitally using photogrammetry in order to have a collection of brick images as PDF’s rather than having to lug the bloody things around. I am thinking that once I get the workflow a bit more sorted that this would be a useful approach for all building materials which generally get left at the site as they are too bulky and similar to drag them all back to the lab.

 

Cheers

 

Dr Iain Stuart

 

JCIS Consultants

P.O. Box 2397

Burwood North

NSW 2134

Australia

 

(02) 97010191

Ia...@jcis.net.au

 

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Gary Vines

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Aug 17, 2016, 11:14:29 PM8/17/16
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Can you do this from pre-existing photos?

gary
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