THE LIBRARY. 113 



in consequence of the natural obstacles which are always 

 encountered in beginning anything new, notwithstanding 

 that it requires, on the contrary, means to promote its 

 development. This once secured, the new industry can, 

 and should, bear its part in sustaining the burdens which 

 fall necessarily upon a nation ; but it is only thus, accord- 

 ing to our judgment, that it can become useful, as by 

 gathering the fruit too soon the tree which yields it may 

 be destroyed, while otherwise it might have yielded crops 

 continually and plentifully. 



' As the information solicited, by circulars dated 8th 

 August last, should now be collected, we may presume that 

 the Consulting Committee of Valuations and Regulations 

 may now take up the question, and give a deliverance 

 upon it. Granted the competence, and proper action of 

 the persons comprising it, we may hope that they will be 

 able to propose some measures to enable the resin industry 

 to come out of its present lethargic condition ; and we 

 should greatly rejoice if these, and other forest industries 

 of a similar character, should enter upon an era of progress 

 and profit ; and this would beyond all doubt redound to the 

 increased pecuniary productiveness of our public forests.' 



Snb Section 3. Collection and Manipulation of Bark and Cork. 



In connection with the collection of bark for tanning, 

 there is supplied in the work of Senor Ceron information 

 in regard to the quantity of tannic acid yielded by the 

 bark of different kinds of trees ; and in the same year in 

 which it was then published was published a work by Don 

 Carlos Castel, Professor in the School of Forestry, entitled 

 Estudios sobre el Tanino : Memoria premiada con el accesit. por 

 la Real Academia de Ciencas Exactas, Pisicas y Naturates, en la 

 Concurs Publico, para 1876, Sobre el tema deter minar el valor 

 intrinsico de la materias curtientes o astringentes, referido al del 

 Tanino producido por los vegetales de Cinco o mas provincias de 

 Espanna ; y exporter con la aproximacion posible, in edad de los 

 vegetales, de donde proceden su cultivo, habitacion y estaqion, epocas 



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