Volume of eggs in the clutches of grass snake Natrix natrix and dice snake N. tessellata: error correction

The authors have made a mistake in calculating the volume of eggs in the clutches of snake family Natrix. In this article we correct the error. As a result, it was revealed, that the volume of eggs positively correlates with a female length and its mass, as well as with the quantity of eggs in the clutches. There is a positive correlation between the characteristics of newborn snakes (length and mass) and the volume of eggs, from which they hatched.