... Our dinner consisted daily of a mess of black porridge of bitter mouldy flour that no English pig would condescend to notice, and a large dish of spinach... 
Samuel White Baker 「In the Heart of Africa」
...Bygreen food we mean such things as lawn clippings,green clover, spinach, green corn stalks, lettuce,celery tops, plantain, dandelion, grasses, etc...
A. C. Smith 「The Raising and Care of Guinea Pigs」
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