_April 27._--To-day all thoughts are turned from the plague to the inundation, which from the falling of a portion of the city wall on the north-west side last night, let the water in full stream into the city. The Jews' quarter is inundated, and 200 houses fell there last night: we are hourly expecting to hear, that every part of the city is overflowed. A part also of the wall of the citadel is fallen. And, in fact, such is the structure of the houses, that if the water remains near the foundations long, the city must become a mass of ruins. The mortar they use in building is very like plaister of Paris, which sets very hard, and does very well when all is dry; but as soon as ever water is applied, it all crumbles to powder; and in building walls of four or five feet thick, they have only an outside casing of brick work thus cemented, and within it is filled up with dust and rubbish, so that what seems strong enough in appearance to bear any thing, soon moulders away, and by its own weight accelerates its ruin. It must be many many years, if ever, before the city can recover. But it seems to me, that this seat of Mohammedan glory, and of its proudest recollections, has received its death-warrant from the hand of the Lord. This inundation has not only ruined an immense number of houses in the city, and been the cause of tens of thousands dying of the plague, but the whole harvest is destroyed. The barley, which was just ready to be reaped, is utterly gone, and every other kind of corn must likewise be ruined, so that for 30 miles all round Bagdad, not a grain of corn can be collected this year, and perhaps, if all was quiet this might be of no consequence, for from Mosul and Kourdistan it might easily come; but this will be prevented by the enemies of the Pasha who surround us. The poor are beginning to feel immense difficulty in the city, for all the shops are shut, and there is a great scarcity of wood for firing; and should the water now cause a general inundation of the whole city, the heart sickens at the contemplation of the scenes that must follow; for the houses of the poor are nothing but mud, scarcely one of which will be left standing. For ourselves personally, the Lord has allowed us great peace, and assured confidence in his loving care, and in the truth of his promise, that our bread and our water shall be sure; but certainly nothing but the service of such a Lord as he is would keep me in the scenes which these countries do exhibit, and I feel assured will, till the Lord has finished his judgments on them, for the contempt of the name, nature, and offices of the Son of God; yet I linger in the hope he has a remnant even among them, for whose return these convulsions are preparing the way.