The former, without occupying himself directly with literary work, laid down in his expert reports and in his working plans many instructions which form the basis for orderly management and silviculture far ahead of the times. Zanthier, writing considerably (especially _Kurzer systematischer Grundriss der praktischen Forstwissenschaft_, 1764), is also notable as the founder of the first forestry school (at Wernigerode), 1763. Another of this class of better educated practitioners, and co-worker with the former two, was _von Lassberg_, who in 1764-1777 organized the Saxon forests. An interesting incident in the life of the last three men is their journey to Denmark and Norway, whither they were called to organize the management of the forests connected with the mines. Another prominent forest manager of the last half of the century, whose literary work is to be found only in various excellent official instructions, among which is one for the teaching of foresters, was the head of the Hessian forest service, a nobleman, _v. Berlepsch_. Of the cameralists who helped to make forestry literature, six or seven deserve mention. These, men of education and polyhistors, were either at the head of affairs, or else professors at universities, where they included forestry as one of the branches of political economy. The credit of the first really systematic presentation of forestry principles and rules, as developed at the time, belongs to _Wilhelm Gottfried von Moser_, a pupil of von Langen, who served in various principalities, and finally with the Prince of Taxis. In his _Principles of Forest Economy_, published in 1757, which for the first time brought out the economic importance of the subject, he discusses in two volumes divided into nine chapters the different branches of forestry. A mining engineer, _J. A. Cramer_, came next with a very notable book, “_Anleitung zum Forstwesen_” (1766), which, although not as comprehensive as Moser’s, treats the subject of silviculture very well. Equal in arrogance and opinionated self-satisfaction to any of the empiricists with whom he frequently crossed swords, was the Brunswick councillor, _von Brocke_, who, as an amateur, practising forestry on his own estate, developed the characteristic trait of the empiricists, namely, a profound belief in his own infallibility. He produced, besides many polemic writings, in which he charged the whole class of foresters with ignorance, laziness and dishonesty, a magnum opus in four volumes, entitled “_True bases of the physical and experimental general science of forestry_,” which is an olla podrida of small value.