Question: it gives a much fuller treatment of the material in his 1943 book, and also contains results obtained since 1943.
Answer: --> It gives a much fuller treatment of the material in his 1943 book, and also contains results obtained since 1943.

Question: many spheres have been found in groups and appear to portray an astronomic position, in rows, waves and triangular patterns, with an alignment towards the magnetic north.
Answer: --> Many spheres have been found in groups and appear to portray an astronomic position, in rows, waves and triangular patterns, with an alignment towards the magnetic north.

Question: the well-shaped, robust metal- and plastic design with non-slip soft plastic components ensure that this adjustable shower/spray lies well in the hand.
Answer:
--> The well-shaped, robust metal- and plastic design with non-slip soft plastic components ensure that this Adjustable Shower/Spray lies well in the hand.