...A heap of saw-dust accumulates on the ground and bears witness to the severity of the task... 
J. Henri Fabre 「Bramble-bees and Others」
...All the drainage within the rim goesinto the cave, and it accumulates in the rainy season until the flooris covered...
Gerard Fowke 「Archeological Investigations」
...They generally keep to the same paths;but when the snow accumulates, and sends one down the wrong way, it hasbeen known to cut down a pine forest, as a scythe mows grass...
John Ruskin 「The Poetry of Architecture」
...The loss per revolutionis exceedingly small, but it accumulates, and at any era the totalloss is the sum of all the losses preceding it...
Oliver Lodge 「Pioneers of Science」
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picnic stuffy professorial
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