MINING BEES. 
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chambers, of the form and size of a lady’s thimble, 
finely polished, and about the color of plaster-of- 
Paris. 
Cells of Mason Bee. One third natural size. 
There are different species of mason bees, but 
they all possess the same general characteristics. 
Mining Bees. 
There is a very small kind of bees, many of 
them not larger than a common house-fly, that 
dig little tubular galleries in the ground. 
These passage-ways are but a trifle larger than 
the body of the bee, and terminate in a thimble- 
shaped, horizontal chamber, slanting off at right 
angles to the passage-way, and nearly twice as 
wide. The whole labor of digging this curious 
little dwelling, with its long entrance cut out of 
