i couldn't wait til monday, called the vet saturday evening. Josh was throwing up hairballs last week, the vet thinks it is stomach acid combined with the hissing of the new kitty. Also told me not to worry unless he loses his appetite (that would send me into panic--he's 12 pounds), starts sneezing or has trouble breathing.

it's monday a.m. and his meow is getting stronger again.

And both josh and mary have stopped hissing at our youngster, mario. yeah! yeah!

thank you for your replies. bonnie