At the present time there is a great interest felt in mushroom culture in the United States, and for those who understand the German language, this little book will be very useful. As a sample of the whole, we give the following translation of one chapter:

"The most favorable places for the cultivation of the edible mushroom are dark cellars, outhouses, vaults, etc, which can be protected from drafts of cold air, and in which a constant temperature of from 10° to 14° R., can be steadily controlled, and in which extremes of moisture and dryness can be regulated by the cultivator. Stables in which animals are quartered are specially favorable on account of the animal heat and the emanation of ammonia which seems to be very favorable to the development of the fungus. Beds in such localities can be made on shelves one above the other from ten to twelve inches in thickness, if the necessary temperature is kept up by the heat of the animals or other artificial means. Where such sources of heat are not at command, the beds must be of a thickness of from twenty-four to thirty inches, in order to secure to the growing plants the necessary height of surrounding temperature. Any time of the year is suitable for the establishment of such beds, providing means are at command to regulate the necessary degree of temperature.