From Archibald McLachlan   Monday

Monday – No 2 – read the other No 2 first1

Awful rumours are afloat to day – of Acid’s2 being in Liverpool by order of the Mas: Gen.3 to investigate into a row among the men, and certain representations to some Members of Par!!!4 He is to be here tomorrow when a number are to be discharged – and some reduced – Yolland5 is to have a division, and to commence surveying in the South of England. Acid is to have Yolland’s place in Southampton – and to be a Little Carbon.6 All is now to be conducted by Acid, under the control of Carbon – Our Div:7 is to be either broken up altogether or given to Yolland – in case of the Liverpool affair ending unsatisfactory, Hamley is to go off – Yolland gets his place and we are to be distributed among all parties – such is the Rumour – I have been consulting my knowing old gent:8 – The plans of Derry – Tyrone – Monaghan – part of Armagh &c9 were revised by him!! I asked what became of the originals – ‘I don’t know but I think they were burned, ask Mr10 he was there and knows more of the whole affair’.

So I will consult Mr – tomorrow

I asked, did any of the original old plans pass revision, did you correct and revise any plans and how many ‘He tried a few of Derry Do11 of Tyrone and other counties, but very few of them would do We plotted fresh plans from the old books and a few of these made good enough plans but only a few of them, we found it took more time to make good plans from old books and revisions, than to make the plans from a complete fresh survey, so after a few trials in each county, we gave up patching & revising altogether & surveyed right out of a face’

When did you begin to survey the lines ‘Think it was in 1832, but I dont recollect every thing we did we plotted some parishes on new sheets, from old Books, we revised them by the line survey but found they would not do, some parts of the Revision we traversed, it was all no use’ How many of the old plans did you revise ‘I dare say we could get one parish out of 20, 19, out of 20 of the old plans & books were not good, and we dropt using them altogether after some trial in each county’. I asked particularly how much time was lost in the original survey he said about 6 years. I said dont you think it was 7 years he said no. From August 1825 to the beginning of, or middle of 1832 not more than 6 years So here we differ! perhaps he is right!!! if he is right, I am one year wrong I asked were other districts as bad as his ‘I don’t know, I am not certain of it, but you may rely on it they were all as bad as us’

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I will repeat it ‘The scientific labours of the first 7 years &c’ – and dare them to disprove it should they prove it was only 6 or 5 ½ years I care not, the important point designed and insisted on is still correct If they prove that all the old maps, plots &c were not burned, I care not, the grand fact stands correct – I will hazard the assertion that the order to Burn, extended to all the Districts, and to all the useless maps plots &c The only possible mode of disproving is producing the original maps plots, books This I defy them to do the more I look into it, the more confident I become Tomorrow (Tuesday) I will consult Mr it wont be before post time but you shall soon hear You will have an answer to the other points soon

B.12

Tuesday 1 o’clock yours of Monday13 came – I wont be in time for the post if I stay to say much the reason for delay is that I would not be in time for Sunday’s post and wished to consult with the above mentioned –

This sheet may be read separate from the other remarks –

1st Mr G14 - It is uncertain whether he was appointed by the Board or not I cannot find any body who read his appointment or who saw it. He acted in 2 capacities, Bdy15 Surveyor, and Valuer. The Bdy. S.16 was paid by Government Valuation is paid by the County The County pays a part, if not the whole expenses of valuation. I am informed by knowing ones, that he was appointed partly by the Board, & partly by the Irish Government at the Castle, Dublin – The Irish Government is his principle employer as to the valuation The Board is his employer as to Boundaries – this is all I am able to collect on the matter

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2nd Lt. Renwick17 – Bickett18 knows all about him Think he went off the S.19 about the end of 1828. I am pretty sure that was about the time.20 The cause of his leaving was irregularity, and disobedience of orders – The great fault was, Surveying roads streams &c by lines instead of by traverse. When he was reproved by Cap English,21 he said ‘By God I’m right, you will all do it that way yet’ He did not do all his parishes by lines only a few of the later ones And in the revision his work was not so useless as the other officers.

3rd £300,000 was for S. and not for Bdy or valuation. Griffith used to get a separate grant for Bdy ask D.22

4th My calculation goes to say upwards of 200,000 was lost by the original Survey Others who know the subject as well as myself say 250. or 270.000 We are safe in saying 200.000 In the Ho of Com:23 1829 Carbon stated the expense at 77.000!!! I understand his trick lies in not including military pay of man or officer!! 77.000!!! that sum is a bare faced prevarication the mere pay of officers would be more than half that sum –

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The First 7 years24

5th I would not repeat the word ‘First’. I would rather say the First 6 years the whole lies in the word ‘First’. However you can state it as you will, here is my way of calculation –

from August 1825 to 1830 = 5 ½ years,
1830 or 1831 revision commences – Revision Experiment = 1/2 year
The First 6 years = 6.0

From 1831 to 1835 or 6 we lose another year in attempts to cobble up some parishes of certain counties. There was much more than one year lost but say 1 year Total 7 years. So we have 6 years lost, in succession, that is provable and at least one year more at repeated attempts If some old men are put on oath they would say, ‘more than 7 years’. The only objection which could be found is with the word ‘First’ which is not critically correct let them find fault if they like their error in correcting us will be soon detected.

Altitudes

6th The three alterations are notorious Captain H.25 deduced altitudes from one mountain, Captain L.26 from another mountain – they differed when they came to close on each other. Both were right and no mistake!! – Neither would give in. Carbon was down there at dinner – the 3 parties disputed on the altitudes, Carbon agreed with Cap H. – Cap L. got into a rage (he was a violently passionate man) he jumped up from the table, and slashed his plate with all its contents against the door – and jumped, and tramped on the broken pieces – The heights were changed to agree with Cap H. –Afterward H was proved to be wrong. They were altered back again to the original – and still wrong – At the Revision the whole altitudes were given to, or done by, one officer – Portlock27 – and he altered all that was done before. – B.

NB The above alterations were made in the principal County heights – some of the parish heights were altered ½ dozen times.

RI MS JT/1/TYP/11/3809-3812

RI MS JT/8/1/4a

read the other No 2 first: i.e., letter 0242.

Acid: a nickname for an unidentified opponent of Tyndall’s on the Ordnance Survey, possibly Henry Tucker.

the Mas: Gen.: the Master General of the Ordnance Survey, George Murray.

Members of Par: Members of Parliament.

Yolland: William Yolland (1810-85), a senior officer on the Ordnance Survey who was responsible for many of the maps of Lancashire and Yorkshire (ODNB).

Carbon: a nickname for Thomas Frederick Colby; see letter 0231, n. 9.

Div: Division.

my knowing old gent:: not identified.

Derry – Tyrone – Monaghan – part of Armagh &c.: counties in Ireland.

Mr: not identified; McLachlan chose to omit the name.

Do: Ditto.

B.: the pseudonym McLachlan used to avoid detection.

yours of Monday: letter missing.

Mr G: Richard John Griffith.

Bdy: Boundary.

S.: Survey.

2nd Lt. Renwick: William Turnbull Renwick (1802-1890), a Royal Engineer who worked in the E District of the Ordnance Survey, under the command of Captain Frederick English. He joined the army aged 22 and became 2nd Lieutenant on 12 September 1825. He rose steadily through the ranks, achieving the rank of General on 27 February 1876. He served on the Irish Survey at his first post between September and November 1825. He came back to the Survey between October 1826 and March 1832. He then went to Jamaica. He later served in Ireland for three separate periods, as well as spending over eleven years in Canada and almost three years in the Cape of Good Hope. Renwick died in Ontario, Canada on 5 April 1890.

Bickett: Joseph Bickett, a civil assistant. He worked in the District Office in Captain Tucker’s A District. Bickett joined the Survey on 26 December 1826. In December 1839 he was the highest paid civil assistant in the A District on a daily rate of 4/6. His primary duty at this point was examining plans. He was stationed at Waterford during the early 1840s. His pay rose to 4/9 in the autumn of 1840. He left the Irish Survey, presumably for England, between August and November 1841; the records for this period are missing.

the S.: the Survey.

1828. I am pretty sure that was about the time: Louisa Tyndall annotation: ‘Wrong, it was in [18]31’.

Cap English: Captain Frederick English, a Royal Engineer. He worked on the Ordnance Survey of Ireland throughout the 1820s, and was commander of the E District. English served on the Iberian Peninsula and the Netherlands between 1808 and 1809, and in France between 1815 and 1818. He became 2nd Captain in 1813, and was promoted to Captain in 1825. He went on to become Lieutenant Colonel in 1837, and he died in 1849 at Woolwich Arsenal after an accident resulting from an artillery experiment.

D.: probably a civil assistant in the 1st Division; see letter 0231, n. 6.

Ho of Com.: House of Commons; see letter 0252 for Tyndall’s description of Colby’s 1829 testimony before the House of Commons regarding the Ordnance Survey of Ireland. See letter 0211 in Volume 1 for an earlier reference to this testimony.

The First 7 years: McLachlan appears to be giving Tyndall notes on a draft of the third Spectator letter; see letter 0252.

Captain H: probably William George Hamley.

Captain L: probably Sir Thomas Aiskey Larcom (1801-79), a senior surveyor on the Ordnance Survey. Larcom had joined the Survey in 1824 and in 1828 was appointed Colby's assistant in the headquarters of the Irish survey at Mountjoy House, Phoenix Park, Dublin. Larcom was put in charge of the office for engraving maps, but he soon came to dominate the whole business of ordnance surveying. By early 1846 simmering tensions between Larcom and Colby came to a head. Colby was increasingly jealous of Larcom's independence and of his stature in Ireland and on the Survey. Colby successfully had Larcom dismissed in 1848. However, Larcom enjoyed a highly successful career after his dismissal. In January 1853 Larcom was appointed under-secretary for Ireland under Aberdeen's liberal-Peelite administration, a position he would hold until 1868, and was then created baronet and appointed to the Irish privy cabinet. He died in Heathfield, Hampshire in 1879.

Portlock: Captain Joseph Ellison Portlock (1794-1864), an officer of the Ordnance Survey (ODNB). He was born in Hampshire and came from a Church of England background. He joined the Royal Engineers at the age of 18. He advanced steadily through the ranks, becoming 2nd Lieutenant on 20 July 1813, 1st Captain on 2 September 1839, and eventually Major General on 25 November 1857, at which point he retired from duty. Portlock served in Canada between 1814 and 1822 and was involved in a successful military campaign in Upper Canada in 1814. He began on the Ordnance Survey of Ireland in July 1824. He was stationed in Corfu after leaving the Ordnance Survey in April 1843. He returned to Ireland in 1847, and was married in Cork in December 1849. Portlock died at Blackrock, near Dublin on 14 February 1864.

Please cite as “Tyndall0243,” in Ɛpsilon: The John Tyndall Collection accessed on 30 April 2024, https://epsilon.ac.uk/view/tyndall/letters/Tyndall0243