It is formed of sand or fine gravel cemented by infiltrated oxide of iron.
I have reason to believe that's about the only place that hasn't been infiltrated by those professing allegiance to East or West.
Some tried to organize trade unions that were easily infiltrated by the police.
Where the dropsical condition is more or less general the term " anasarca " is applied to it; if the tissues are infiltrated locally the term " oedema " is employed; and various names are applied, with a local significance, to dropsies of individual parts or cavities, such as " hydrothorax," " hydroperitoneum " or " ascites," " hydrocephalus," and so on.
On 20th February McCarthy made a six hour speech on the Senate floor about how the Democratic administration had been infiltrated by communist subversives.