Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
The precious interval was employed in preparing catapults and armour; day and night all, without distinction of age or sex, were occupied in constructing machines and forging arms; the public buildings were torn down to procure timber and metal; women cut off their hair to furnish the strings indispensable for the catapults; in an incredibly short time the walls and the men were once more armed.
That all this could be done without the consuls, who were but a few miles off, learning anything of it, is not the least marvellous feature in this marvellous movement sustained by a truly enthusiastic, and in fact superhuman, national hatred. When at length the consuls, weary of waiting, broke up from their camp at Utica, and thought that they should be able to scale the bare walls with ladders, they found to their surprise and horror the battlements crowned anew with catapults, and the large populous city which they had hoped to occupy like an open village, able and ready to defend itself to the last man.
Do you see any typos or other mistakes? Please let us know and correct them
Reference address : https://www.ellopos.net/elpenor/rome/4-01-gracchi.asp?pg=47