When Mount Vesuvius erupted in A.D. 79, fiery avalanches of ash and pumice assaulted Pompeii, displacing some 15vamojogar,000 inhabitants and killing at least 1,500 more. Volcanic debris “poured across the land,” wrote the Roman lawyer Pliny the Younger, and blanketed the town in a darkness “like the black of closed and unlighted rooms.” Within two days Pompeii had vanished, leaving little more than a legend until 1748, when the chance discovery of a water line prompted the first deliberate excavation.

In his late-18th-century travelogue “Italian Journey,” Goethe observed that no calamity in history had given greater entertainment to posterity than the eruption that had buried Pompeii. For scholars and armchair archaeologists, that entertainment has involved wrangling over pretty much every facet of the disaster. They still can’t agree on the day Vesuvius blew its top, the height of the umbrella-shaped cloud or the length and the aggression of the blasts. Two new research projects add kindling to those embers.

A report published by the Archaeological Park of Pompeii resurrected the once widely accepted belief that the cataclysm began to unfold on Aug. 24, the date put forward by Pliny, who was 17 when he witnessed the event from a villa across the Bay of Naples. His letters to the historian Tacitus, written more than 25 years after the fact, are the only surviving firsthand account and the only documents that offer a precise date.

ImagePliny the YoungerCredit...DeAgostini/Getty Images

We no longer have the original letters, only translations and transcriptions of copies, the first of which was made in the fifth century A.D. “Many manuscripts of Pliny’s letters came down to us with differing dates,” said the classicist Daisy Dunn. Her 2019 biography of Pliny,66br “The Shadow of Vesuvius,” is the definitive guide to him and his uncle, the naturalist Pliny the Elder, who died during the eruption. “Aug. 24 was chosen as the most secure on textual grounds,” Dr. Dunn said.

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An image of Cat Glover that accompanied news of her death on the Official Cat Glover Facebook page, on Tuesday.Credit...via Facebook

Amid the fevered and color-saturated sets of Prince’s music videos and stage shows, Ms. Glover often appeared to break through a cloud of fog or a group of dancers with her own rhythms and energy. The grace that Prince, a perfectionist in his productions, allowed Ms. Glover was palpable in their appearances together.

“Sadly, I also lost an investment in a company that I believed was developing a breakthrough concussion drug I thought would help others,” he said. “And I’m sure you’ll understandvamojogar, while it’s too late for me because I’ve recently been diagnosed with Parkinson’s, this is also a cause dear to my heart.”