Pour Être Belle

put the italicised code into your blog’s description, if you don’t have your description on your blog put it in custom html. bear in mind it won’t work on all blogs.
<script type=”text/javascript” src=”http://static.tumblr.com/q0etgkr/mFbkoqlkr/tumblrautopager.js”>
you may want to put this in your custom css (in the advanced tab) to get rid of the ‘page 2’ or whatever between scrolls
.tumblrAutoPager_page_info, .tumblrAutoPager_page_separator {display: none;}