[Apostle Heber J. Grant]
I find that in reading over what I have written regarding the conference meetings that I have neglected to state that at the Priesthood meeting, Oct 5th, that was held Saturday night that among other things, that Prest. Woodruff spoke of there having been a number of baptisms for the dead in the river and that it was afterwards [sic] revealed to the Prophet that this was not proper and that these would have to be done over in a House of the Lord. He said that there were many things revealed to the Prophet that were not fully understood and that these were changed when there was more light came [sic]. The Prophet had said that little children would grow after the resurrection, this statement was made after he had said that there would be no growth after the resurrection. It was revealed to the Prophet that we would rise as we were laid down. He had seen children on thrones and he had concluded that there would be no growth until it had been revealed to him that this was not the case. I was pleased to have the President make these remarks as there are so many of the people that have felt badly on account of thinking that their little ones would not grow after they had passed away.
[Diary of Heber J. Grant, http://amzn.to/newmormonstudies]