Why is toilet paper perforated in such small squares? - Jim from the mid-West...again.

Based on the reams of anatomy journals that can easily be accessed by even the most simple-minded of primates, it is common knowledge that over the past 350 years, the size of the average American has grown considerably from the small-ish colonial height of 5-foot and one-half inch to the modern median height of 5-foot five inches.
Henry "Wee" Wiper, the inventor of the perforated bathroom tissue in 1779, was a man who never grew over the height of 4' 9". Anatomically speaking, height was not the only minuscule aspect of Wipers person. His physical need for a more handy paper product for cleansing resulted in his scoring the common roll of "privy paper" into manageable sheets. Thus, the what-you-call "small" sheets were the perfect size for Wipers hand and elsewhere. And they have remained that size up through today.
Unfortunately, Wiper will never get the proper credit for his monumental contribution. His French-immigrant neighbor, Georges D'Cottonelle, stole the idea and patented it before Wiper could proceed with the legal paperwork. D'Cottonelle then made his countless fortunes selling his "new" product to the millions of people in China, who as we know, are a size-ably smaller people.