Starting at the a-axis and going counterclockwise, the figure shows curves C$_{1}$ , C$_{2}$ , C$_{3}$ and C$_{4}$ . In the figure we can see that the pair C$_{1}$ and C$_{2}$ as well as the pair C$_{3}$ and C$_{4}$ have the same slope at the origin. Also C$_{2}$ and C$_{3}$ have the same asymptote. It is not difficult to show from Eqs. 80 and 81 that, in general, C$_{2}$$_{n}$$_{+1}$ and C$_{2}$$_{n}$$_{+2}$ have the same slope at the origin and C$_{2}$$_{n}$ and C$_{2}$$_{n}$$_{+1}$ share an asymptote. A couple of examples of (2)(32) n type processes were mentioned in the introduction. These and one other example are given in more detail now. The capture of a proton from protonium by a muon is a (232) process: The muon is particle 1, the proton is particle 2 and the antiproton is particle 3. The scattering angle can be shown to be 2.72 rad. The process Na + I$_{2}$ → NaI + I is a molecular example of (232) which has scattering angle 1.09 rad. The capture of a proton from muonic hydrogen by an electron: e +( µp ) → H + µ is an example of a higher order process, (2)(32) $^{10}$, with scattering angle 1.09 rad (the same as the previous angle only to three significant figures). The time reversed process, H + µ → e + ( µp ) is more interesting because it is a process in which muonic hydrogen is created. It is a (21) $^{10}$(2) process with scattering angle 59 mrad. 24 µ + ( pp ) → ( µp ) + p. (86)