A guide to the examination of the urine : intended chiefly for clinical clerks and students / by J. Wickham Legg.

  • John Wickham Legg
Date:
1870
Catalogue details

Licence: Public Domain Mark

Credit: A guide to the examination of the urine : intended chiefly for clinical clerks and students / by J. Wickham Legg. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    instrument. Tho observer then notices if any alteration in colour of tho two halves of the held has taken place. If the uniformity of colour no longer exist, he turns the screw below the eye- pieco until tho two halves of the field appear of precisely the same tint. The eyes are best rested occasionally during this part of the operation by ] ik looking on some white surface, as the ceiling of the room, or a sheet of paper. When the two semicircles are exactly the same in colour, the number of degrees which the moveable zero is distant from the fixed zero is read off; and if the fluid observed contain sugar, the moveable scale » will be found to the right: but if albumen only, to the left. The number of degrees that the zero has moved gives, when divided by 2, the per- centage amount of either sugar or albumen, if the . longer tube were used; but the percentage is at once known, if the shorter tube were employed, as it is the same in amount with the number of degrees by which the two zeroes are separated from each other.