It's a lovely piece of work, and I wondered why the artist is not better known. Neither English nor French Wikipedia has a page about him; Dutch Wikipedia does, but lists none of his works (it mentions that he was one of the contributors to the massive Panorama of Cairo, mainly attributed to Émile Wauters, now scandalously lost). It mentions that his work can also be found in the municipal museum of Ixelles, in Etterbeek town hall, and in the church of St Boniface which is across the square from one of my favourite Thai restaurants. I'll have a look next time I'm down that way.
Looking around, a lot of his work that comes on the market seems to be wistful women of various ages. Perhaps that's where the money was. None of these seems to me to catch the energy of the "Sacramental Procession".
His landscapes and townscapes are not a lot better, though I do like the "Blessing of the Sea" which catches some of the spirit of the earlier procession.
But it's really his urban scenes with people in them which have the most life. Apart from the procession where we started, three of his other paintings grabbed me: "Dressmaker with Children and Dolls", "The Ball" from 1903 and best of all "The Big Snowball", also fronm 1903, in which you can practically hear the little boys swearing. Some of their fathers and uncles may have been in the "Sacramental Procession", 25 years before.
His daughter Berthe Flaminé Mayné became an artist too. A woman with almost the same name, Berthe Antonine Mayné, romantically set off to Canada with her rich lover in 1912 and survived the sinking of Titanic, but I am sure that they are different people. Berthe Flaminé Mayné seems to have specialised in painting women, who generally have more character than her father's. I have not found much else out about her, except that her husband was called Adhémar Flaminé and their war-time passports survive.