The Uncompaghre, with only a small amount of water, flowed through a broad and fertile valley containing several hundred thousand acres of cultivable soil.
On the lower slopes of the Cordillera there are fertile irrigated valleys which produce grapes and olives for commercial purposes, and a considerable variety of fruits, cereals and vegetables for local consumption.
The Lower Greensand escarpment looks inwards in its turn over the wide plain of Weald Clay, along which the Medway flows in the north, and which forms a fertile soil, well cultivated, and particularly rich in hops and wheat.
All the islands possess a very fertile soil; there are forests of coco-nut palms, and among the products are rice, maize, sweetpotatoes, yams, coffee, cotton, vanilla and various tropical fruits, the papaw tree being abundant.
The soil is for the most part clayey, resting on a bed of chalk, and is, in general, fertile and well tilled.
Experimental pathology has benefited by the use of antiseptic surgery in operations upon animals, and by the adoption of exact methods of recording; while the employment of solid culture media in bacteriology - the product of Koch's fertile genius - is responsible for a great part of the extraordinary development which has taken place in this department of pathological research.
From a geological standpoint, the Great Australian Plain and the fertile valley of the Nile have had a similar origin.
The great advance in the interpretation of land forms now makes it possible to introduce as thoroughly explanatory a description of these fertile plains as of forms earlier familiar, such as sand dunes, deltas and sea cliffs.
Its southern foothills are covered with loess, making them fertile valleys.
With the exception of the sub-montane districts of Jodhpur, which lie immediately below the Aravallis, this division is sandy, ill-watered and unproductive, improving gradually from a desert in the northwest and west to comparatively fertile land on the east.