This section is from the book "The Gardener V1", by William Thomson. Also available from Amazon: The New Organic Grower: A Master's Manual of Tools and Techniques for the Home and Market Gardener.
By Professor Johnston. William Blackwood & Sons, Edinburgh and London.
This is a new edition of a work which has passed through thirty-six editions, and which has been translated into nearly every European language. It is revised and enlarged, and in every respect brought down to the present time, by Charles A. Cameron, Professor of Chemistry to the Royal College of Surgeons. Having intimated thus much, we need hardly say more in commendation of the work. It ought to be learned by heart by every gardener and farmer, for the questions it puts and answers lie at the very foundation of the culture of the soil and the rearing of crops; and it only costs Is.