The magnetic measurements below 80K are difficult to obtain but can be useful in the deter­mination of structure. A Gouy balance was developed and tested from room temperature down to 18K. Measurements on some bis-amino acid copper(II) complexes indicated ideal magnetically dilute behaviour. Tutton's salt of manganese indicated Curie Weis law behaviour over the entire temperature range. 


W E SMITH ,N G MANGRIO ,