An online guide to the collection is available.

]]> ]]> “My dealing with the instrument has been principally as a teacher, and not of microscopy as a specialty, but as a fractional portion of long-extended courses on anatomy, delivered to large classes. The most I could hope for was to teach them the rudiments of histology, and more especially to give them knowledge enough to make them wish for more. I have therefore aimed at having perfectly and easily manageable instruments, at selecting the more important and interesting objects, and at making everything as plain as practicable, knowing well that if a mistake in looking through a microscope is within the bounds of possibility, the young student will be certain to make it.”]]> ]]> “The scene was most impressive as the whole audience arose on his entrance. A member of the first class stepped forward, and in a few words, carefully prepared but rather tremulously delivered, presented a silver loving-cup as a gift of the class and expressed their regret at the separation. Dr. Holmes was so surprised and affected that for once his readiness failed him. He could but utter a few disconnected sentences of thanks, and say that lest his feelings should overcome him, it were better he should keep to the lecture he had written.”]]> to the Library of Harvard Medical School
]]> ]]> ]]> Francis A. Countway Library of Medicine. Center for the History of Medicine.
Harvard Medical Library and Boston Medical Library]]>
(1) The experimental device was made from a rectangular sheet metal tank. ]]>
(2) Dr. Drinker prepares to enter the apparatus on a bed made from two "garage creepers."
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(3) The attendant has just released the rubber collar on the subject's neck.]]>
(4) Underneath the tank are two vacuum cleaner type pumps with inlet and outlet valves. Alternating pressure cycles are created by attendant, Louis Freni, manually operating a hand rocker valve to apply positive and negative pressure inside the chamber.]]> ]]>