With respect to a lounging room, in which persons might meet before the lecture, or to which they could retire during the lecture, I assume with submission that such a place should not _on any account_ be allowed. Wherever I have had accidentally such a convenient room in the vicinity of a lecture room I have been obliged to lock it up; otherwise the disturbance to the company by persons coming in and going out is intolerable. The lectures will always begin at a certain hour to a minute. If any find themselves a few minutes too soon, they will find an elegant lecture room, well warmed. This will prevent their coming into the room in a body and disturbing the audience and the lecturer after the lecture is begun. That matters might be put in a proper train it would, I think, be best to agree immediately upon the arrangement of the house, and to give Mr. Webster and myself, with one or more of the managers, the power of seeing the arrangement executed. I am, with much respect, your most obedient Servant, THOS. GARNETT. On January 6, 1800, the managers resolved that the morning lectures of Dr. Garnett should be given on Tuesday and Thursday at two, and the evening lectures at eight, on Monday, Wednesday, and Friday. The first lecture was on Tuesday, March 4. The two rooms which now make the upper library formed the theatre. It had been fitted up to accommodate the greatest possible number of auditors, ‘with a greater deference to their curiosity than to their convenience.’ In the first number of the Journal of the Institution the account of Dr. Garnett’s lectures for the week beginning April 7 shows the arrangements that then existed. MORNING LECTURES.--On Tuesday, the 8th, the lecture will be on Charged Electrics and the Theory of the Leyden Phial, with experiments. On Thursday, Respiration and Animal Heat will be continued, with the Effects of Oxygen in the Blood. On Saturday, on Hydrogen Gas and the Composition of Water, Sulphurated and Phosphorated Hydrogen; and a specimen of the philosophical fireworks with the inflammable air will be exhibited. EVENING LECTURES.--On Monday evening, the 7th, the subject will be Spontaneous Evaporation, Ignition, and Inflammation, with some Remarks on Light. On Wednesday evening, the Different Powers of Bodies as Conductors of Heat; and some Experiments with the Passage Thermometer. The method of confining heat and applying it to useful purposes with economy. Friday being Good Friday, no lecture will be given on that day. Those who come to the lectures in carriages are requested to give orders to their coachmen to set down and take up with their horses’ heads towards Grafton Street. A contemporary account says: