The article discusses the effect of solid surfaces on bacterial activity, focusing on how these surfaces influence bacterial growth and metabolism. It highlights that bacteria are more active in small containers with more solid surface area per unit volume, as they can adsorb nutrients more effectively. The study shows that organic matter is adsorbed onto glass surfaces, which then supports bacterial growth. This is supported by experiments where organic matter was found to be adsorbed on glass, and the presence of bacteria on these surfaces was observed. The adsorption of nutrients on solid surfaces is believed to be a key factor in promoting bacterial activity, especially in dilute nutrient solutions. The article also discusses the different types of solid surfaces, such as glass, plastics, porcelain, and sand, and their effects on bacterial growth. It notes that some bacteria are sessile, meaning they attach to solid surfaces and grow there. The study concludes that solid surfaces enhance bacterial activity by providing a surface for nutrient adsorption, supporting bacterial attachment, and facilitating the assimilation of nutrients. The research also explores the factors that influence the adsorption of nutrients and bacterial attachment, such as the type and concentration of organic matter, the surface properties of the solid, and the presence of other ions and pH levels. The findings suggest that solid surfaces play a crucial role in promoting bacterial growth and activity in various environments, including seawater and other natural waters.The article discusses the effect of solid surfaces on bacterial activity, focusing on how these surfaces influence bacterial growth and metabolism. It highlights that bacteria are more active in small containers with more solid surface area per unit volume, as they can adsorb nutrients more effectively. The study shows that organic matter is adsorbed onto glass surfaces, which then supports bacterial growth. This is supported by experiments where organic matter was found to be adsorbed on glass, and the presence of bacteria on these surfaces was observed. The adsorption of nutrients on solid surfaces is believed to be a key factor in promoting bacterial activity, especially in dilute nutrient solutions. The article also discusses the different types of solid surfaces, such as glass, plastics, porcelain, and sand, and their effects on bacterial growth. It notes that some bacteria are sessile, meaning they attach to solid surfaces and grow there. The study concludes that solid surfaces enhance bacterial activity by providing a surface for nutrient adsorption, supporting bacterial attachment, and facilitating the assimilation of nutrients. The research also explores the factors that influence the adsorption of nutrients and bacterial attachment, such as the type and concentration of organic matter, the surface properties of the solid, and the presence of other ions and pH levels. The findings suggest that solid surfaces play a crucial role in promoting bacterial growth and activity in various environments, including seawater and other natural waters.