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appropriate for collecting plants or their parts, so as to gain, most 
effectually, their medicinal virtues ; a tabular calender of the 
seasons at which they are collected ; their desiccation, preserva- 
tion, &c. 
Succedaneus or analogous remedies, giving the analogy of the 
properties of plants of the same family, and, to a certain extent, a 
means of substituting one for the other, when necessary. 
Scientific classification of plants and animals, treated in a tabu- 
lar form. 
Pharmaceutical classification and nomenclature. — Being an ex- 
position of the several attempts that have been made by Beral, Che- 
reau, and Henry and Guibourt, to form a scientific classification 
and nomenclature of remedies. 
Therapeutic classification of remedies, useful both to the physi- 
cian and the pharmaceutist. 
Vart de formuler, or the philosophy of writing prescriptions 
therapeutically and pharmaceutically correct. 
This chapter, and the following, entitled " Execution of Pre- 
scriptions" cover twenty-four pages, and are full of interesting 
details. They form, in themselves, a complete treatise on the 
particular branch of writing and executing prescriptions, worthy 
of an entire republication, if the limits of this journal permitted 
it ; but we shall confine ourselves to a few quotations : 
"The art of prescribing," says Mr. Dorvault, " is the applica- 
tion of the knowledge acquired in Chemistry, Pharmacy, Thera- 
peutics, and in the physical and natural sciences. Therefore, in 
order to practice this art successfully, it requires a profound and 
diversified knowledge, united to qualifications almost innate, a 
perfect tact and sound judgment. Indeed, it may be asserted with- 
out any hesitation, that the art of prescribing is the criterion of 
medical ability, and the prescription is the end and object of 
medical studies, and the test of qualifications for practising medi- 
cine. A learned anatomist, a profound physiologist, one deeply 
versed in most medical sciences, in pathology itself, may be a 
scientific man ; but he cannot be pronounced a Physician, if he be 
ignorant of the rules of this art." 
This chapter, more particularly addressed to the practitioner,is 
intended to point out the best modes of associating drugs in extem- 
poraneous recipes. The author treats of the subject under several 
