BOTANICAL COLLECTIONS 1 15 



Botany will lead to their instruction in this useful art. 

 Next to such diagrams, and for some purposes superior 

 to them, are the excellent published diagrams of anat- 

 omy in the Kny and in the Dodel series. The best of 

 these is that of Kny, with full explanations in German, 

 of which one hundred have appeared, each 84 x 68 cm., 

 costing about $85 for the set, and the teacher should 

 make every effort to obtain this series. They should 

 be mounted on cloth for greater resistance to wear. 

 Another valuable series is that of Frank and Tschirch, 

 devoted to the physiological aspects of structure, sixty 

 in number, of the same size as Kny's and also with 

 explanations in German. The series of Laurent and 

 Errera, fifteen in number, slightly larger than those of 

 Kny, with explanations in German, French, and Eng- 

 lish, is also good. If one cannot afford the Frank 

 series, the latter is a fair substitute. The Dodel-Port 

 series, slightly larger than the Kny series, is also 

 valuable, as is the Peter series, published by Fischer 

 in Berlin. Full particulars of these may be obtained 

 through any of the dealers in botanical supplies or in 

 foreign books. 



Many teachers value diagrams made by themselves 

 or students above these printed kinds, holding that they 

 have much more meaning, and hence value, and are 

 also much cheaper. There are several methods of 

 making them. One of the simplest and best is the 

 use of strong, light-brown manila paper for the back- 



