In closing my short Introduction I cannot do better than refer to a visit paid to the Bell Rock Lighthouse by some fifty members of the British Association in 1850, and give a few quotations from a speech made by Dr Robinson, of Armagh, at a general meeting of that Association held in Edinburgh shortly afterwards, when he moved a vote of thanks to the Commissioners of Northern Lighthouses for their courtesy in conveying the party and showing them over the Lighthouse. He said he had been led to an object which, almost from the days of his childhood, engrossed his attention, and which he had ever regarded as one of the wonders of the world. “When I visited that marvellous, beautiful structure, rising up in its strength and loneliness out of the deep, I found that though the sea was calm and the wind was still, yet there was quite enough of danger in the enterprise of approaching it. Under these circumstances it enabled the mind to call up for itself the terrors which must in former years have beset those who were unhappily entangled in that wilderness of rocks, which that noble structure now crowns as a beacon.... It was impossible not to feel admiration for the beneficent courage and the mechanical skill of the late distinguished engineer, Robert Stevenson.... When I thought of the extraordinary resources, both of wealth and talent, that must have been accumulated to overcome such a tremendous difficulty, I naturally looked to the nature of the power by which such marvels had been achieved, and I found not a mere unenlightened body of what are called practical men, of persons who followed the road of experience, going always into the same old track, and incapable of availing themselves of the progress of the age to perfect their feeble endeavours. I found I was among men who were able to teach me in many important facts regarding which I had in vain sought for information for years, and which I learned in that excursion.... When I was led to ask the question, Who are the controllers of this admirable system? I learned with surprise that the Commissioners of Northern Lighthouses are not a set of salaried functionaries, whose professional habits might have led them to interest themselves in these pursuits, but a body of lawyers and municipal magistrates.” Dr Robinson’s appreciation of the Commissioners in the important services they render to the shipping interests is, I am sure, shared and endorsed by all who know or have known the Commissioners of any period. J. M. EDINBURGH, _August 1904_. NOTES ON THE NATURAL HISTORY OF THE BELL ROCK. _APRIL 1901._