The author's excellent 'powers of observation' [=ability to notice and pay close attention to things] are evident in the book's detailed descriptions.
The plants seem to have recovered from the disease, but they are still 'under observation'. [=someone is watching them carefully]
They're keeping him at the hospital 'for observation' [=so that doctors can watch him carefully] for another few days.
(..) Robert: "Honesty, often akin to poisonous drinks, tell thy friend what thou truly thinks." Robert: Based on my observation, if you really want to elevate your status in this company, it's gonna have to start with a considerable attitude adjustment. Now the whole (..)2009 The Black Waters of Echo's Pond