Letters and papers on agriculture and planting, etc.

2

Letters and papers on agriculture and planting, etc.

5

Letters and papers on agriculture and planting, etc.

1

Simetria de estereogramas usados no levantamento da indicatriz ótica de minerais

Há uma relação de simetria entre os estereogramas construídos através do método analítico de determinação da indicatriz ótica de minerais em secção delgada, na platina universal. Esta simetria é discutida neste trabalho. Trata-se de uma plano-simetria que ocorre tanto entre gráficos como entre curvas ψ1 e ψ2 , quando ψ1 + ψ2 = 90°.

Letters and papers on agriculture and planting, etc.

6

Notes and Queries : a Medium of Intercommunication for Literary Men, etc.

7 (Second Series)

Notes and Queries : a Medium of Intercommunication for Literary Men, etc.

3 (Second Series)

Notes and Queries : a Medium of Intercommunication for Literary Men, etc.

5 (Jan. - June)

Notes and Queries : a Medium of Intercommunication for Literary Men, etc.

10 (Second Series)

Notes and Queries : a Medium of Intercommunication for Literary Men, etc.

8 (Second Series)

Notes and Queries : a Medium of Intercommunication for Literary Men, etc.

2 (Second Series)

Notes and Queries : a Medium of Intercommunication for Literary Men, etc.

12

Notes and Queries : a Medium of Intercommunication for Literary Men, etc.

4 (Second Series)

Notes and Queries : a Medium of Intercommunication for Literary Men, etc.

10

Notes and Queries : a Medium of Intercommunication for Literary Men, etc.

6 (July - Dec.)