Corrected obvious typos and inconsistencies in punctuation:

• p34a. BIEGE -> BEIGE (also in Index and Index to samples).
• p54. half a century age -> half a century ago.
• terra-cotta (Index) -> terra cotta (text).
• triluel -> trileul.
• p65. luke water -> luke-warm water.
• p104. certian -> certain.
• p122. turmeric is boiling -> turmeric in boiling.
• p124. analine -> aniline.
• p151. Lay down the feathers for four hours is a cold. bath -> Lay down the feathers for four hours in a cold bath.
• p162. most energetic and and effectious -> most energetic and effectious.
• p173. and hand them over -> and hands them over.
• p187. Operate of follows -> Operate as follows.
• p188. to put feathers one side -> to put feathers to one side.
• p189. composion -> composition
• In the Sample Index, the page for BLUE, MEDIUM should be 34a not 24a.

Some inconsistencies and oddities in spelling and hyphenation have been left as printed:

• hand heat and hand-heat.
• centrifugated (in text) and soloble (in printed advertisement).
• redyed, re-dyed.
• peroxyd and peroxide.
• luke warm, lukewarm and luke-warm.
• p114 The correct formula for hydrogen peroxide is H₂O₂