(iv) There remains, fourthly, evidence relating to early Rome itself, and to customs and observances which obtained there. These customs belong to the three fields of religion, agrarian land-settlement and war. All three exhibit the same principle, the division of a definite space by two straight lines crossing at right angles at its centre, and (if need be) the further division of such space by other lines parallel to the two main lines. The Roman augur who asked the will of Heaven marked off a square piece of sky or earth--his _templum_--into four quarters; in them he sought for his signs. The Roman general who encamped his troops, laid out their tents on a rectangular pattern governed by the same idea. The commissioners who assigned farming-plots on the public domains to emigrant citizens of Rome, planned these plots on the same rectangular scheme--as the map of rural Italy is witness to this day. These Roman customs are very ancient. Later Romans deemed them as ancient as Rome itself, and, though such patriotic traditions belong rather to politics than to history, we find the actual customs well established when our knowledge first becomes full, about 200 B.C.[53] The Roman camp, for example, had reached its complex form long before the middle of the second century, when Polybius described it in words. Here, one can hardly doubt, are things older even than Rome. Scholars have talked, indeed, of a Greek origin or of an Etruscan origin, and the technical term for the Roman surveying instrument, _groma_, has been explained as the Greek word 'gnomon', borrowed through an Etruscan medium. But the name of a single instrument would not carry with it the origin of a whole art, even if this etymology were more certain than it actually is. Save for the riddle of Marzabotto (p. 61), we have no reason to connect the Etruscans with town-planning or with the Roman system of surveying. When the Roman antiquary Varro alleged that 'the Romans founded towns with Etruscan ritual', he set the fashion for many later assertions by Roman and modern writers.[54] But he did not prove his allegation, and it is not so clear as is generally assumed, that he meant 'Etruscan ritual' to include architectural town-planning as well as religious ceremonial. [53] The prologue to the Poenulus of Plautus (verse 49) which mentions 'limites' and a 'finitor', may well be as old as Plautus himself. But the 'centuriation' still visible in north Italy around colonies planted about 180 B.C. is no full proof of rectangular surveying at that date. These towns were re-founded at a much later date, and their lands, and even their streets, _may_ have been laid out anew. [54] Varro _ling. lat_. 5. 143 _oppida condebant Etrusco ritu, id est, iunctis bobus_, cf. Frontinus _de limit_. (grom. i. p. 27).