New Orleans ? Thousands more bedraggled refugees were bused to salvation Saturday, leaving the city of New Orleans to the dead and dying, the elderly and frail stranded too many days without food, water or medical care.

No one knows how many were killed by Hurricane Katrina’s floods and how many more succumbed waiting to be rescued. But the bodies are everywhere: hidden in attics, floating among the ruined city, crumpled on wheelchairs, abandoned on highways.

The last refugees at the Superdome and the convention center climbed aboard buses Saturday bound for shelters, but the dying goes on.

While the official death toll has barely been started, the numbers are expected to eventually be staggering. New Orleans Mayor Ray Nagin said that officials know “there is a significant number of dead bodies in the water and other people dead in attics – minimum hundreds, most likely thousands.”

Mississippi has confirmed its death toll has reached 147, but Gov. Haley Barbour said, “We don’t know how many fatalities there are. The official count is really meaningless.”

Federal and Louisiana teams of morticians were activated on Friday and temporary morgues were being made ready for the state’s dead.

“We’ve asked for morgues from the federal side and the state side. That’s happening,” said Louisiana Gov. Kathleen Blanco on Saturday.

Craig Vanderwagen, rear admiral of the U.S. Public Health Service, said one morgue alone, at a St. Gabriel prison, expected 1,000 to 2,000 bodies.

Touring the airport triage center, Senate Majority Leader Bill Frist, R-Tenn., a physician, said “a lot more than eight to 10 people are dying a day.”

Most were those too sick or weak to survive. But not all.

Charles Womack, a 30-year-old roofer, said he saw one man beaten to death and another commit suicide at the Superdome. Womack was beaten with a pipe and being treated at an airport triage center, where bodies were kept in a refrigerated truck.

“One guy jumped off a balcony. I saw him do it. He was talking to a lady about it. He said it reminded him of the war and he couldn’t leave,” he said.

Three babies died at the convention center from heat exhaustion, said Mark Kyle, a medical relief provider.

First signs of hope

But some progress was evident. The last 300 refugees at the Superdome were evacuated Saturday evening, eliciting cheers from members of the Texas National Guard who had been standing watch over the facility for nearly a week as some 20,000 hurricane survivors waited for rescue.

The convention center was “almost empty” after 4,200 people were removed, according to Marty Bahamonde, a spokesman for the Federal Emergency Management Agency.

At the convention center, where earlier estimates of the crowd climbed as high as 25,000, thousands of refugees dragged their meager belongings to buses, the mood more numb than jubilant. Yolando Sanders, who had been stuck at the convention center for five days, was among those who filed past corpses to reach the buses.

“Anyplace is better than here,” she said.

“People are dying over there.”

Nearby, a woman lay dead in a wheelchair on the front steps. A man was covered in a black drape with a dry line of blood running to the gutter, where it had pooled. Another had lain on a chaise lounge for four days, his stocking feet peeking out from under a quilt.

By mid-afternoon, only pockets of stragglers remained in the streets around the convention center, and New Orleans paramedics began carting away the dead.

A once-vibrant city of 480,000 people, overtaken just days ago by floods, looting, rape and arson, was now an empty, sodden tomb.

The people responsible for securing and preserving the bodies to be later identified had not collected a single body out of New Orleans by Saturday because of the more pressing need to rescue the living.

“There is no emergency. The dead ones, they can wait,” said Jack King with the Texas Disaster Response Team, a volunteer group that was waiting in Texas for the word to go in and help.

The exact number of dead won’t be known for some time. Survivors were still being plucked from roofs and shattered highways across the city. President Bush ordered more than 7,000 active duty forces to the Gulf Coast on Saturday.

“There are people in apartments and hotels that you didn’t know were there,” Army Brig. Gen. Mark Graham said.

The overwhelming majority of those stranded in the post-Katrina chaos were those without the resources to escape – and, overwhelmingly, they were black.

“The first few days were a natural disaster. The last four days were a man-made disaster,” said Phillip Holt, 51, who was rescued from his home Saturday with his partner and three of their aging Chihuahuas. They left a fourth behind they couldn’t grab in time.

Tens of thousands of people had been evacuated from the city, seeking safety in Texas, Tennessee, Indiana and Arkansas.

Texas Gov. Rick Perry warned Saturday that his enormous state was running out of room, with more than 220,000 hurricane refugees camped out there and more coming.

Emergency workers at the Astrodome were told to expect 10,000 new arrivals daily for the next three days.

In Washington, Transportation Secretary Norman Mineta announced that more than 10,000 people had been flown out of New Orleans in what he called the largest airlift in history on U.S. soil. He said the flights would continue as long as needed.

Thousands of people remained at Louis Armstrong New Orleans International Airport, where officials turned a Delta Blue terminal into a triage unit. Officials said 3,000 to 5,000 people had been treated at the triage unit, but fewer than 200 remain. Others throughout the airport awaited transport out of the city.

“In the beginning it was like trying to lasso an octopus. When we got here it was overwhelming,” said Jake Jacoby, a physician helping run the center.

Airport director Roy Williams said about 30 people had died, some of them elderly and ill. The bodies were being kept in refrigerated trucks as a temporary morgue.

At the convention center, people stumbled toward the helicopters, dehydrated and nearly passing out from exhaustion. Many had to be carried by National Guard troops and police on stretchers. And some were being pushed up the street on office chairs and on dollies.

Nita LaGarde, 105, was pushed down the street in her wheelchair as her nurse’s 5-year-old granddaughter, Tanisha Blevin, held her hand. The pair spent two days in an attic, two days on an interstate island and the last four days on the pavement in front of the convention center.

“They’re good to see,” LaGarde said, with remarkable gusto as she waited to be loaded onto a gray Marine helicopter. She said they were sent by God. “Whatever He has for you, He’ll take care of you. He’ll sure take care of you.”

LaGarde’s nurse, Ernestine Dangerfield, 60, said LaGarde had not had a clean adult diaper in more than two days. “I just want to get somewhere where I can get her nice and clean,” she said.

Around the corner, a motley fleet of luxury tour buses and yellow school buses lined up two deep to pick up some of the healthier refugees. National Guardsmen confiscated a gun, knives and letter openers from people before they got on the buses.

“It’s been a long time coming,” Derek Dabon, 29, said as he waited to pass through a guard checkpoint. “There’s no way I’m coming back. To what? That don’t make sense. I’m going to start a new life.”

Hillary Snowton, 40, sat on the sidewalk outside with a piece of white sheet tied around his face like a bandanna as he stared at a body that had been lying on a chaise lounge for four days, its stocking feet peeking out from under a quilt.

“It’s for the smell of the dead body,” he said of the sheet. His brother-in-law, Octave Carter, 42, said it has been “every day, every morning, breakfast lunch and dinner looking at it.”

When asked why he didn’t move further away from the corpse, Carter replied, “it stinks everywhere, Blood.”

Dan Craig, director of recovery at the Federal Emergency Management Agency, said it could take up to six months to get the water out of New Orleans, and the city would then need to dry out, which could take up to three more months.

A Saks Fifth Avenue store billowed smoke Saturday, as did rows of warehouses on the east bank of the Mississippi River, where corrugated roofs buckled and tiny explosions erupted. Gunfire – almost two dozen shots – broke out in the French Quarter overnight.

In the French Quarter, some residents refused or did not know how to get out. Some holed up with guns.

As the warehouse district burned, Ron Seitzer, 61, washed his dirty laundry in the even dirtier waters of the Mississippi River and said he didn’t know how much longer he could stay without water or power, surrounded by looters.

“I’ve never even had a nightmare or a beautiful dream about this,” he said as he watched the warehouses burn. “People are just not themselves.”