1847.] Jnd Blight in Grain. 43 



The whole is the result of close microscopic observations; and 

 the various figures represent magnified views of the disease and 

 its progress — also sectional views. 



The plates are handsome sleel plates, and will be well 

 copied. 



The whole might well be comprehended in from about 25 to 30 

 pages of the Quarterly Journal, and perhaps less; and perhaps 

 4 or 5 pages of plates. 



Corda is the author of a work of repute on Mycology. 



The following remarks by the author may be regarded as a 

 brief explanation of the object of the work, etc., in which our 

 subscribers may be interested. 



The respected reader will pardon the freedom with which the 

 author seeks to illustrate old long known facts in a way probably 

 somewhat new to the husbandman — and he will find in these 

 sketches simply plain matters of fact without any scientific pedantry. 

 The author has no wish to search into the vast lore, or to repro- 

 duce the views of past observers, although he is well acquainted 

 with all the works, even those only partially worthy of notice, from 

 Theophrastus to Strauss, Bulliard, Meyen, Ungar, on this sub- 

 ject, among which the labors of Banks, Fries and Unger must be 

 considered as the best guides. The author's aim is only to build 

 on the foundations of facts depending on the internal structure 

 and physiological connection, without desiring to admit or oppose 

 the views, theories and so called experiments of others. In all 

 pathological inquiries, besides Prof. Dr. Unger, none of the wri- 

 ters with whom I am acquainted have regarded the anatomical 

 structure itself of plants. Usually, the so called experiments are 

 presented Avhich are opposed either by their own obscurity or by 

 similar observation of the same or a succeeding investigator. 

 These views the author of these pages has no wisl^i to appropri- 

 ate; and, therefore, he begs the respected reader to receive the 

 following pages as the result of more than twenty years' observa- 

 tions, in which time the author has been especially occupied with 

 the study of the parasitic fungi. At the same time, it should be 

 recollected that this first cycle of pathological treatises regards 

 the parasitic forms of disease as a complete subject, without any 

 reference to their primitive origin, so far as this is possible; for 

 to the perfect physiological knowledge of an organic individual 

 belongs previously the entire knowledge of its species and its ana- 

 tomical structure; as without these two foundations the author 

 himself can only proceed on baseless views and superficial, wordy 

 talk; and so much the more, if belonging to a certain school, he 



