During the implementation of project for digitization vascular plant herbarium Tula Region (RFBR grant 19-44-710002, DS/309), collection K. S. Dubensky, kept in funds Museum Association, was examined. The collected 1896–1919 today has museum-historical as well general biological and partly evolutionary significance, since it reflects changes regional flora that have occurred over past century. ...

437 been rearranged in a more natural sequence without losing scientific value. New material has been added throughout. A new chapter on human background has been added. Endocrinal coordination, which has been previously discussed with nervous coordination, now is assigned a separate chapter. The chapters on plants have been greatly improved. I am sure that the students using this edition will ...