John Marshall (England), Edmund Culpeper (England) &amp; Christian He rtel (Germany) make major structural improvements in microscope design, including use of substage mirror to reflect light up to the object.
(John Marshall (England), Edmund Culpeper (England) &amp; Christian; make; major structural improvements in microscope design, including use of substage mirror)
John Marshall (England), Edmund Culpeper (England) &amp
Christian
make major structural improvements in microscope design, including use of substage mirror