With only 30,000-odd inhabitants, and fairly poor road connections, Dellys is a reasonably small and out-of-the-way place. In summer it briefly fills up with the unfamiliar faces of other Algerians looking for a quiet beach holiday, but I've never seen, for instance, a Chinese person here, even though there are plenty in Algiers. Nevertheless, the problems of the Sahel have made themselves felt even here: this year, for the first time, a couple of families from Niger seem to have made it to Dellys. As I was browsing in a little bookshop, a little girl came in, holding up a bowl and saying "Sara, sara". She said the same word to each of us in turn, then left to proceed along her route. Shortly after she left, I belatedly realised what she was saying. In Zarma (the main language of western Niger), historic intervocalic d became r, and intervocalic velars were lost. Arabic ṣadaqah "alms" (Hausa sadaka) is thus reduced to sara. She can't have been here long, or surely she would have found a more effective expression to use; I imagine everyone else was assuming that she was simply repeating her own name.
As a town, Dellys is not particularly fond of strangers, though it leaves them alone; coincidentally, the owner of the bookshop had just been complaining to me about how all the post-independence immigrants into town - from villages a few kilometres away - had made a mess of the place. Absorbing Nigerien immigrants may take some work. But I expect more will arrive; right now, Niger has the fastest growing population in the world, with a birthrate last seen in Algeria in the 1970s, and in the industrialised world during the 19th century. Many Algerian young people dream of escaping the country's sclerotic economy, sometimes illegally by boat from Dellys - there used to be a graffiti near the lighthouse alluding to the early Muslims' flight to Abyssinia: "I shall go to Spain, for it is ruled by a king who does not oppress anyone." But compared to Niger, Algeria might as well be the US.