Montrouge, Mushroom-caves at, 57 Morchella esculenta, 130 Morel, the, 130 Mouceron or mousseron, 123, 143 Mushroom-beds, materials for, 13 „ „ of sawdust, 19 „ „ of leaves and loam, 19, 21 „ „ of street-sweepings, &c., 19 „ „ chief point to be observed in making, 21 „ „ best time for making, 21 „ „ depth of, 18 „ „ in a stable, 30 „ „ covering for, 34 „ „ how to reduce the heat of, 34 „ „ how to ascertain the heat of, 34 „ „ how to spawn properly, 35 „ „ soil for earthing, 37 „ „ the watering of, 38 „ „ vermin in, 39 „ „ treatment of old, 41, 46 „ „ temperature of, 33, 79 „ „ soil for covering, 79 „ caves, contrivance for watering beds in, 75 „ „ „ for making beds in, 75 „ „ localities of, 75 „ „ depth of, 18, 76 „ „ immense extent of, 76 „ „ at Montrouge, 57 „ „ description of soil used in, 61 „ „ daily produce of, 62 „ „ appearance of beds in, 61 „ „ kind of manure used in, 65 „ „ difficulty in visiting, 65 „ „ at Frépillon, account of, 66 „ „ „ extent of beds in, 66 „ „ „ plan of, 68 „ „ „ appearance of beds in, 70 „ „ „ daily produce of, 66, 70 „ „ preparation of manure in, 71 „ „ „ of spawn in, 73 „ crop, how to gather, 42 „ culture in a shed, 45