Index  Z    A    Name    Mass Excess (MeV)    Spin   Data Source
  _____ ___  ___  ______  ___________________   ____   __________


The collection has a total of 0 species.


Add neutrons:


  Index  Z    A    Name    Mass Excess (MeV)    Spin   Data Source
  _____ ___  ___  ______  ___________________   ____   __________

    0    0    1      n         8.0710           0.50   example 1

The collection has a total of 1 species.


Add protons:


  Index  Z    A    Name    Mass Excess (MeV)    Spin   Data Source
  _____ ___  ___  ______  ___________________   ____   __________

    0    0    1      n         8.0710           0.50   example 1
    1    1    1     h1         7.2890           0.50   example 1

The collection has a total of 2 species.


Remove neutrons:


  Index  Z    A    Name    Mass Excess (MeV)    Spin   Data Source
  _____ ___  ___  ______  ___________________   ____   __________

    0    1    1     h1         7.2890           0.50   example 1

The collection has a total of 1 species.


Free the collection:


Add protons again:


  Index  Z    A    Name    Mass Excess (MeV)    Spin   Data Source
  _____ ___  ___  ______  ___________________   ____   __________

    0    1    1     h1         7.2890           0.50   example 1

The collection has a total of 1 species.