The contents of the letters published here, again show the great range of subjects that occupied Van Leeuwenhoek: from sugar candy, the shape and crystal structure of diamonds, the dissolution of silver crystals in aqua fortis to gold dust from Guinea dissolved in aqua regia and the dissolution and separation of gold, silver, and copper. Every volume in the Series contains the texts in the original Dutch and an English translation. The great range of subjects studied by Van Leeuwenhoek is reflected in these letters: instruments to measure water, pulmonary diseases; experiments relating to the solution of gold and silver; salt crystals and grains of sand; botanical work, such as duckweed and germination of orange pips; description on protozoa. blood, spermatozoa and health and hygiene, for example and harmfulness of tea and coffee and the benefits of cleaning teeth.

This volume (the 14th of a series of 19) contains 21 letters written between August 1701 and March 1704. At least half of these letters were addressed to Fellows of the Royal Society in London. Every volume in the series contains the texts in the original Dutch and an English translation. The great range of subjects studied by Van Leeuwenhoek is reflected in these letters: instruments to measure water; pulmonary diseases; experiments relating to the solution of gold and silver; salt crystals and grains of sand; botanical work, such as duckweed and germination of orange pips; descriptions on protozoa; blood; spermatozoa; and health and hygiene, for example and harmfulness of tea and coffee and the benefits of cleaning teeth.;Volumes One to 13 are available at a reduced price from Swets and Zeitlinger.

I. In some periods of the past Netherlands medicine has played a major role in the evolution of European medicine; today its history still enjoys much in terest even at the other side of the Ocean. In this bibliography it has been my endeavour to compile references for all that has been written on the history of Dutch medicine in our country and elsewhere in our age. The main concern of this work is with the medicine of the Northern Nether lands. However, before the end of the sixteenth century the Northern and South ern Netherlands were not yet divided into two separate countries; they were still politically one and for the greater part spoke the same Flemish language. So be fore their separation the present-day Belgium and Netherlands also had a com mon medical history. Therefore many entries have been included which bear on early (and sometimes later) Flemish medicine, but it has not been the inten tion to strive for completeness in this respect.

Publishes scientific papers along with the Director's report to the Board, and various other information about activities at the Garden.