It is a well-known fact that intensive agriculture has been the cause of decline in the population of certain butterfly species. Farmers, therefore, can contribute greatly in restoring the balance of nature. For this purpose the Dutch Butterfly Foundation has issued a brochure to bring about this awareness to the farmer and to state which measures need to be taken. Essential points are less frequent mowing, no burning of grass slopes and a careful! use of pesticides and fertilizer. A good extension network will be beneficial to both farmers and nature conservationists.