...It is not, however, as important as othermatters, such as the condition of the food substratum or sensitivityof the pituitary-gonadal mechanism, in determining timing and mode ofbreeding activity... 
Richard F. Johnston 「The Breeding Birds of Kansas」
...Plaster alone may be used, but myreason for making a substratum of peat is, that if the formeronly is used it renders the head unpleasantly heavy...
Montagu Browne 「Practical Taxidermy」
...The inner coat of themouth-cavity is not provided by the gut-gland layer, but by the skin-senselayer; and its muscular substratum is provided, not by the gut-fibre, but theskin-fibre, layer...
Ernst Haeckel 「The Evolution of Man」
...He has marshalled his data with great skill, and has dissected out, as it were, the physical and cultural elementsof the Negrito substratum...
Robert W. Williamson 「The Mafulu」
...The water is no doubt permanent, forit is supplied by the drainage of the sandhills that surround it, and itrests on a substratum of impervious clay...
Ernest Giles 「Australia Twice Traversed, The Romance of Exploration」
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