The first and the seventh page share the same lines of text.

https://github.com/Vazkii/Botania/blob/master/src/main/resources/assets/botania/lang/en_US.lang#L1607
^This particular line should be changed to 'botania.page.runeAltar22'
https://github.com/Vazkii/Botania/blob/master/src/main/java/vazkii/botania/common/lexicon/LexiconData.java#L317
^So does the related entry
[it was a silly error, @Vazkii ¬¬]