Complex sentence: The races were concluded with a large dinner given for all the competitors; involving toasts, prize-giving, speeches, snowshoeing songs, jokes, dancing and "bouncing," the name given to an unusual but favourite custom of the Montreal snowshoers.
Split into simpler sentences: The races were concluded with a large dinner given for all the competitors; involving toasts, prize-giving, speeches, snowshoeing songs, jokes, dancing and "bouncing". The last named activity-the bounce-was the name given to an unusual but favourite custom of the Montreal snowshoers.