A great little catechism that argues for and defends Presbyterianism as the Biblical for of church government. As good as the book is, the notes at the back of the book are even better.
This catechism is a very good, judicious introduction to Presbyterian church government. He covers a whole lot of ground in a very short space, including issues such as the parts of worship, Sabbath observance, ecclesiastical censures, holy days, personal covenanting, society meetings, and much else besides. There were a few points that I did not fully agree with, such as the attempt to say that written prayers should never be used owing to the temptation towards "vain repetitions". As anyone who has spent any time in the average modern Presbyterian church will know, the complete non-use of written prayers has led to so much vain repetition that you could practically turn up at a service and say the prayers yourself. Truly, the Book of Common Prayer has slain its thousands, while modern Presbyterian prayers have slain their tens of thousands.