If you have a microscope and a drop or two of the right kind of dirty water you can enter a new world of interest.


Hunting Under the Microscope (p. 50), The Macmillan Company. 1928


If you have a microscope and a drop or two of the right kind of dirty water you can enter a new world of interest.

If you have a microscope and a drop or two of the right kind of dirty water you can enter a new world of interest.

If you have a microscope and a drop or two of the right kind of dirty water you can enter a new world of interest.

If you have a microscope and a drop or two of the right kind of dirty water you can enter a new world of interest.