Bee consistency. Some solitary bees have advanced types of pollen-carrying structures on their bodies. A very few species of solitary bees are being cultured for commercial pollination. Most of these species belong to a distinct set of genera which are commonly known by their nesting behavior or preferences, namely: carpenter bees, sweat bees, mason bees, plasterer bees, squash bees, dwarf carpenter bees, leafcutter bees, alkali bees and digger bees. Most solitary bees nest in the ground in a variety of soil textures and conditions while others create nests in hollow reeds or twigs, holes in wood. The female typically creates a
Calendar of the Digger Calendar of the Digger "The Calendar of the Digger" (1973) is an agricultural calendar devised by Florentine writer and economist Marco Lastri. The full title translated from the Italian is "Calendar of the Digger: The Monthly Tasks of the Digger, Work of the Utmost Importance to the Farmer, as Written by Lastri" (). This calendar and other of Lastri's critically acclaimed books on the rural economy were integrated into a single volume entitled "Lessons on Practical Agriculture" (). This volume is still considered among the best books on agrarian practice sold in Italy during the nineteenth century. The work follows