Social purity
Subtitle: being a sermon
By: preached by Marcus Dods ; and An address by John G. M'Kendrick
Contributors: McKendrick, John Gray, 1841-1926
Publisher: Christian Institute
Published: 1880
Place of publication: Glasgow
Language: eng
Number of pages: 32
Subjects: Sexual ethics
Notes: "Both delivered to the Young Men's Christian Association of Glasgow".

Dated from the following: on p. 18 is the statement that "Quite recently it has been ascertained that ... two species, Ornithorynchus and Echidna ... are really oviparous ...". This was discovered in 1884.