Sorted but still a puzzlement.
The 'No browser connection' came up but I never the less composed and sent 2 E-mail from from my Yahoo account to the Gmail account and vice versa. Both were sent, from the tablet and each received on the iTouch and Desk top. But browser remained unobtainable But browser remained unobtainable
Trawling through set up controls revealed a Wi Fi [ To router]switch had switched off and switching it on all came back to life
But if there was no Wi Fi connection during this time- how did the Emails get sent?