The derivation commonly accepted for Piccadilly is from pickadil, a stiff collar or hem in fashion in the early part of the 17th century (Span.
The conquering tribe or tribes had made their way to the sierra from the plains, and found themselves a new land sheltered from attack amidst the lofty mountains that hem in the valley of Cuzco and the vast lake basin of Titicaca, situated 12,000 ft.
Granite, diorite and other plutonic rocks hem in the winding upper valleys of the Kisogawa, the Saigawa (Shinano river) and many other rivers of this province, their clear water running over granite.
The morainic belts and other obstructions in the drift plains hem in the waters in the intervening basins and create what are called " glacial lakes," var y ing in diameter from a few yards to several miles.
Care should be taken, however, not to hem in the garden by crowded plantations, shelter from the prevailing strong winds being all that is required, while the more open it is in other directions the better.