|A chapter section, from the 2007 book 101 Things You Should Know, on intelligence, IQ, smartness (brightness), and speculation on the query “smartest person ever”, which talks about how some, supposedly, have found that the mathematical reasoning section of Einstein's brain was bigger on average. |
On 18 Apr 1955, at the Princeton Medical Center, New Jersey, Einstein ceased to exist.
Within eight hours, supposedly, his brain was removed by American pathologist Thomas Harvey who cut it into 240 blocks for study; the rest of the body was cremated and his ashes were scattered in the river.
Harvey sent tissue slides to several neuropathologists, who reported nothing exotic. The remaining brain sections floated in two mason jars of formaldehyde, inside of a cardboard box marked Costa Cider, under a beer cooler in Harvey’s office.
In the mid-1980s, Marian Diamond studied Einstein’s brain, finding that, in the left inferior parietal lobe, there were more glia per neuron (73 percent) as compared to average brains. 
In 1999, his brain was examined by Sandra Witelson and colleagues at McMaster University, who found that it weighted 1,230 grams; had parietal lobes, essential for mathematical and spatial reasoning, that appeared 15 percent wider than normal (a phenomenon also, supposedly, found in Gauss and Siljestrom); and his Sylvian fissure, the fold running through the parietal lobes, was missing. 
Einstein’s corpus callosum, supposedly, was also found to be highly myelinated and much thicker than average. (Ѻ)
In 2001, American investigative journalist Michael Paterniti published Driving Mr. Albert: a Trip Across America with Einstein’s Brain, wherein he details the so-called what had become “urban myth” of the Einstein’s brain. (Ѻ)
1. Jensen, Eric. (2009). Enriching the Brain: How to Maximize Every Learner’s Potential (pgs. 155-56). John Wiley & Sons.
2. Ackerman, Diane. (2004). An Alchemy of Mind: the Marvel and Mystery of the Brain (pgs. 63-65). Simon and Schuester.
3. Horne, Richard and Turner, Tracey. (2007). 101 Things You Need to Know: and Some You Don’t (pgs. 86). Bloomsbury.
● Albert Einstein’s brain – Wikipedia.