N. Ignatov

Author of 23 articles in the encyclopedia. Name transliterated from the original Russian signature.

• American Filters
• Anemometer
• Barometer
• Berkefeld Candle
• Bird Eggs
• Bran
• Butyrometer
• Degree
• English Filters
• Hefner Lamp
• Hygrograph
• Illuminating Gas
• Lactobutyrometer
• Lactodensimeter
• Lactoscope
• Mustard
• Rain Gauge
• Remission
• REOMETERS
• Saccharin
• Spices
• Table Salt
• Water Hardness