I am afraid, my dear D——­, I have trespassed on your patience, both in this letter and the last, as nothing but physic and its practitioners have been introduced and discussed.  I have certainly been too selfish; for, while I have been pursuing a subject the most interesting to me from the nature of my profession, a thought never once obtruded itself, that my friend perhaps would take no interest in the relation.  However, by way of compensation, I give you leave to wish the Moorish physicians and their physic at the bottom of the Red Sea, and me with them, if you choose; but I have now done with them, and my next will, most probably, not be from Mequinez, as I think I have a good opportunity of returning to Gibraltar.

LETTER XXII.

Depart for Gibraltar—­Oppressive Heat—­Robbers—­Arrive at Larache—­Affray of some English Sailors—­Letter from the Governor to Lord Collingwood.

Larache, August I, 1806.

I was perfectly right in my conjectures, that you would hear no more from me at Mequinez.  Having succeeded in curing the patients under my care, and no disease of any consequence prevailing in the country, I thought it a favourable opportunity to request permission of the Emperor to return to Gibraltar; and having obtained it, I set off for this place.

On my way hither, I experienced the most dreadful inconvenience from the heat of the weather; it was oppressive in the extreme, and I was constantly annoyed with the sight of dead horses, mules, asses, cows, &c. that had perished on the road, from excessive heat and want of water.  The rivers which I had observed on my way to Mequinez, and the waters of which I had so much relished, I now found completely dried up.  We also suffered considerably from the want of fresh water, for that we had brought with us in bags became so hot, that nothing but the most dire necessity could have compelled us to make use of it; fortunately we now and then met with fields full of fine water-melons, of a most exquisite flavour:  we sought them with the greatest avidity, and obtained relief from the excessive thirst with which we were oppressed.  We were obliged to make very short stages, and to halt every hour under the shade of some tall trees, to recover ourselves.

I have had two or three most unpleasant encounters (on my way from Mequinez) with robbers.  In the first I ran the risk of my life.  It was the sixth day after we left Mequinez, as I was loitering considerably in the rear of my party, I was accosted by a common Moor on horseback, who, after surveying me from head to foot, asked for a pinch of snuff, which I gave him; then spying the gold chain of my watch, he attempted to seize it; but I prevented him by spurring my horse and galloping off to join my guard:  the fellow fired his piece, which fortunately missed, and gave me an opportunity of returning the compliment, and of wounding him; when perceiving my guard coming at