It is here, in this little familiar corner, that she prefers to settle her progeny.

But then the apartments are few in number and of all shapes and sizes.

There are long and short ones, spacious ones and narrow.

Short of expatriating herself, a Spartan course, she has to use them all, from first to last, for she has no choice.

Guided by these considerations, I embarked on the experiments which I will now describe.
I have said how my study became a populous hive, in which the Three-horned Osmia built her nests in the various appliances which I had prepared for her.