There’s a lot of angst in the book publishing industry — and among book lovers — about the rise of the e-book and the decline of the printed version, but there’s good news for those who care about books regardless of what form they take: A growing body of evidence shows that people with e-readers are reading more books. A recent survey found that 40 percent of those with e-readers said they were reading more books than they used to before they had the device, which is consistent with earlier data on e-reading habits. E-book sales climbed by more than 200 percent in the first six months of this year, according to the Association of American Publishers.

The survey by Marketing and Research Resources found that 58 percent of those with e-readers (including the Apple iPad (s aapl), the Amazon Kindle (s amzn) and the Sony Reader (s sne)) said they…