Many instances are on record where mushroom-beds have been invaded by a growth of strange fungi and the true mushrooms have been ousted to the advantage of the new-comers.
When mushrooms are gathered for sale by persons unacquainted with the different species mistakes are of frequent occurrence.
Many instances are on record of symptoms of poisoning, and even death, having followed the consumption of plants which have passed as true mushrooms; these cases have probably arisen from the examples consumed being in a state of decay, or from some mistake as to the species eaten.
Paris mushrooms are cultivated in enormous quantities in dark underground cellars at a depth of from 60 to 160 ft.
As one is exhausted another is in full bearing, so that by a systematic arrangement a single proprietor will send to the surface from 300 lb to 3000 lb of mushrooms per day.