...In some of the NorthAfrican kingdoms the infiltration of Negro blood was very large andkings like Massinissa and Jugurtha were Negroid... 
W.E.B. Du Bois 「The Negro」
...This stock was variedcontinually; now by new infiltration of Negro blood from the south,now by Negroid and Semitic blood from the east, now by Berbertypes from the north and west...
W.E.B. Du Bois 「The Negro」
...Thiswould find its way by infiltration into the interiorof the nut...
Frederic A. Lucas 「Animals of the Past」
...The liquid remains in it quite well, without any trace of infiltration...
J. Henri Fabre 「Bramble-bees and Others」
...Currelly attempted to excavate at Buto, in order to find traces of the predynastic kingdom, but owing to the infiltration of water his efforts were unsuccessful...
L.W. King and H.R. Hall 「History Of Egypt, Chaldæa, Syria, Babylonia, And Assyria In The Light Of Recent Discovery」
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