On this website I read that about 1348 William Caldwell (or de Cauldwell) became Lord High Chancellor of Scotland. I thought the title meant that he was the CEO. But then I read that the Lord High Chancellor is the one who appoints the Lords who sit on the highest court of appeals of the House of Lords. I looked for something that might shed light on what the House of Lords does, and here is one of their reports:

The House of Lords Report

Loch Ness Monster
Submarine Research
Wednesday 16th July 1969 2.46pm

Question:

Lord Kilmany:
My Lords, I beg to ask the Question which stands in my name on the Order Paper.

[The question was as follows:

To ask Her Majesty's Government whether they are satisfied, from assurances given by persons operating submarines in Loch Ness, that any monsters that may chance to inhabit that loch will not be subjected to damage or assault.]

The JOINT PARLIAMENTARY UNDER-SECRETARY of STATE for SCOTLAND (Lord Hughes):
My Lords, we proceed from one monster to another. The Answer to the Question is, Yes. The organiser of the Loch Ness Phenomena Investigation Bureau Limited has given assurances to the Chief Constable of the Inverness Constabulary that the submarine operations have no aggressive intent.

Lord Kilmany:
My Lords, arising out of that reply, may I ask whether the noble Lord is aware that the Chief Constable has in fact given permission for an attempt to be made to obtain a tissue sample from whatever monsters can be found? Is the noble Lord satisfied that this could be done without danger and disturbance, and does the Secretary of State for Scotland condone this course?

Lord Hughes:
My Lords, the organiser has said that the main objective of the submarine will be to try to get a positive identification of any echo which may be picked up by the Bureau's sonar equipment. For this purpose it will be fitted with arc lights and photographic gear. In addition, it will have a small compressed air gun designed to fire a retrievable dart so shaped as to extract a small sample of tissue for subsequent analysis. This technique is widely used for tagging whales. In the particular context of this scientific expedition I hardly think it constitutes damage or assault. On the other question which the noble Lord has asked, while I have no reason to doubt the assurances that have been given to the Chief Constable, I must point out that my right honourable friend the Secretary of State has no real locus in the matter. Unless and until the monster is found and examined we cannot even say whether the provisions of the Cruelty to Animals Act 1876 would be relevant, since that Act does not apply to invertebrates.

Viscount Massereene and Ferrard:
My Lords, is my noble friend aware that it will be an act of sacrilege to take away from the Scottish Tourist Board the myth of the monster of Loch Ness by which they get many gullible tourists each year?

Lord Hughes:
I do not know on what scientific ground my noble friend says that the monster is a myth.

Lord Lovat:
My Lords, is the noble Lord aware that neither the Inverness County Council nor the police, nor the riparian owners on the shore were alerted to the fact that two submarines were coming to operate in the Loch? May I further ask him whether he is aware that, according to reports in the Press, "nature study" goes so far as for the "Phenomena" promoters to say that if they cannot contact the monster with lance or submarine they propose to detonate charges below the surface and blow the animal on to the top of the water - something we very much regret in the county where the monster still remains our greatest invisible asset.

Lord Hughes:
My Lords, there are many rumours about the monster, and I know that there were other suggestions about what might be done. An American group were interested in an alternative way of trying to find it, but when they discovered that it would involve them in expenditure of half a million dollars they changed their mind.

Viscount St Davids:
My Lords, will my noble friend make clear to his right honourable friend the Secretary of State for Scotland that there is legislation under which these creatures could be protected and that the British Waterways Board, as the navigation authority, have the right to remove the licences for these vessels if they start annoying the local livestock?

Lord Hughes:
My Lords, I should be very interested to examine any information my noble friend can give me in that direction.

Lord Hawke:
My Lords, how would the noble Lord like to be "potted" by an airgun to take samples of his tissue?

Lord Hughes:
My Lords, provided that the relevant part of my tissue was no greater than the small amount, in proportion, that was taken from the bulk of the whale, I doubt whether I should notice it.

Lord Lovat:
My Lords, the noble Lord's answer is not entirely satisfactory. Is he aware that in America there is considerable embarrassment that these two submarines should have arrived without local authority? They quite rightly take the view that we can hardly launch an expedition on Lake Okeechobee in similar circumstances.