THAILAND ALAS, POOR ELEPHAS ! HE'S LOSING CLASS WHEN KING BHUMIBOL ADULYADEJ LAST WEEK CELEBRATED HIS 36TH BIRTHDAY A PARTICULARLY SIGNIFICANT ANNIVERSARY TO THAIS, WHO MEASURE LIFE IN TWELVE-YEAR CYCLES TRADITIONALISTS WERE SADDENED NOT TO FIND A SINGLE ROYAL ELEPHANT TAKING PART IN THE ELABORATE CEREMONIES . IN THAILAND, AS ELSEWHERE IN ASIA, THE ONCE ENORMOUS IMPORTANCE OF THE ELEPHANT HAS DECLINED DRASTICALLY . WHILE ELEPHANT OWNERSHIP IS STILL CONSIDERED PRESTIGIOUS, A NEW CADILLAC OR MERCEDES (THE KING OWNS SEVERAL OF EACH) NOW RATES FAR HIGHER AS A STATUS SYMBOL THAN A MATURE, 15-YEAR-OLD ELEPHAS MAXIMUS WITH 40 YEARS OF RUGGED MILEAGE AHEAD OF HIM . NO PARKING . THAILAND NOW HAS FEWER THAN 10,000 REGISTERED WORKING ELEPHANTS V . SOME 150,000 AUTOMOBILES . SAYS ONE OLD-SCHOOL THAI : " OH, YES, RICH MEN STILL USE ELEPHANTS, BUT ONLY WHEN THEY GO INTO THE FOREST TO WORK . WHERE FRIENDS CAN SEE THEM, THEY RIDE AUTOMOBILES INSTEAD . " WHILE THE USED-ELEPHANT MARKET HAS BEEN SERIOUSLY DEPRESSED BY AUTOMATION, A MAHOUT-MAINTAINED MODEL WITH BUCKET SEAT, TWO-TONE UMBRELLA AND STICK SHIFT COSTS UP TO 1,500 F.O.B . BANGKOK, OR ABOUT $4,000 DELIVERED AT THE BRONX ZOO . IN THAILAND A U-RIDE-IT ELEPHANT IS STILL A BARGAIN AT $2.50 A DAY (ONE TENTH AS MUCH AS A RENTED TRUCK) AND IS STILL HARD TO BEAT WHEN IT COMES TO BIRD WATCHING, SPRAYING TREETOPS OR HAULING LOGS . BUT IT IS IMPOSSIBLE TO FIND PACHYDERM PARKING SPACE IN BANGKOK . SHRUGS A TAXICAB MAHOUT : " ELEPHANT TOO MUCH FIGHTING, TOO MUCH KICKING, TOO MUCH EATING . I LIKE PLYMOUTH . PLYMOUTH ONLY TAKES GAS ONE TIME A DAY . " WHITE MODEL NOSTALGIC THAIS RECALL THE GLORIOUS DAYS WHEN SIAM'S ELEPHANT CORPS WAS ITS DREADED FORCE DE FRAPPE. AS A MEMBER OF SEATO, THAILAND NOWADAYS SETS MORE STORE BY ITS U.S . SUPPLY TANKS . NONETHELESS, ALLOWS COLONEL DAMNERN LEKHAKUL, A MILITARY HISTORIAN ATTACHED TO THE THAI GENERAL STAFF, " IF A WAR COMES, WE MAY HAVE TO RELY ON ELEPHANTS FOR JUNGLE COMBAT OR IF WE RUN OUT OF GAS . " MOST THAIS ALSO STILL BELIEVE, WITH EDWARD TOPSELL, AN EARLY 17TH CENTURY BESTIARIST, THAT THE ELEPHANT IS A " GREAT AND AMPLE DEMONSTRATION OF THE POWER AND WISDOM OF ALMIGHTY GOD " PARTICULARLY THE WHITE VARIETY . KING BHUMIBOL HAS DEMOCRATICALLY QUARTERED HIS OWN NINE-YEAR-OLD WHITE MODEL IN THE BANGKOK ZOO . THERE, WHEN HE REACHES MATURITY IN A FEW YEARS, THE HANDSOME SPECIMEN MAY BECOME THE FIRST WHITE ELEPHANT EVER TO BE MATED IN CAPTIVITY . THEY INSIST TO THIS DAY THAT ABRAHAM LINCOLN SHOULD HAVE ACCEPTED THEIR KING MONGKUT'S TIMELY OFFER OF ELEPHANTS IN 1862 . REGRETFULLY, LINCOLN EXPLAINED TO THE KING THAT THE U.S . CLIMATE DID NOT " FAVOR THE MULTIPLICATION OF THE ELEPHANT . " IT IS POSSIBLE, NONETHELESS, THAT IF THE UNION HAD BEEN ABLE TO FIELD A PACHYDERM PANZER DIVISION, THE U.S . CIVIL WAR MIGHT HAVE BEEN FORESHORTENED .