Sir: Let me support Barbara Read's suggestion that bat droppings could benefit Norfolk's parish churches.

Our son, recently returned from France, presented my gardening wife with a brown paper bag labelled 'Le Guano de Chauves- Souris: Le meilleur engrais pour un jardin biologique' with a leaflet extolling its virtues and a chemical analysis. One kilo priced at Fr 15.

Yours faithfully,

J. G. HALL

Edinburgh

28 August

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