The word “hematology,” which appears to have been first used in this country in 1811, is older than might be expected, for in 1743, Thomas Schwencke (1694-1768) wrote Hamatologia, sive Sanguinis Historia, Experimentis passim superstructa etc. Hagae Comitum. Hematology, like bacteriology, has developed as the result of laboratory methods and the applications of physics and chemistry.

The word “hematology,” which appears to have been first used in this country in 1811, is older than might be expected, for in 1743, Thomas Schwencke (1694-1768) wrote Hamatologia, sive Sanguinis Historia, Experimentis passim superstructa etc. Hagae Comitum. Hematology, like bacteriology, has developed as the result of laboratory methods and the applications of physics and chemistry. There is a resemblance between the evolution of surgery and that of haematology; in the case of the surgeon’s craft the advent of anmesthesia in the middle of the last century greatly facilitated the performance of operations, but eventual success was deferred until Lister’s teaching was accepted and practised. The invention of magnifying lenses arid microscopes which, with their progressive improvements, especially the compound achromatic form of microscope invented by G. D. Amici (1786-1863) of Modena a hundred years ago, was the first step in making it possible to see the solid constituents of the blood, long preceded any real knowledge of haematology. It is wonderful what Antonj van Leeuwenhoek (1632-1723) of Delft saw even with his own lenses.^[1]

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