240 Scientific Intelligence. 



devoted to a consideration of the modes of attachment of ( 

 8 of Loranthacece, to the foster plant. This i 



penetrate through the bark to the wood. The shape which any 

 sucker assumes depends on the relative activity of the growth of 

 the sucker itself and of the cambium. In some cases, as Lor- 

 anthus Europcaus and L. Sternhergianus, the sucker sends out 

 processes which penetrate into the wood itself. The writer eon- 

 firms the suggestion made by John Scott that the vascular bundles 

 of the parasites communicate with those of the plants on which 

 . they are growing. 



Part II is devoted to the vegetative organs of the RafflesiaeecB, 

 which had previously been studied only in Pllostyles Hmm- 

 knechtii Boiss. and Cytinus Hypocistus L. The writer gives the 

 results of his examinations oi Pilostyles ^thiopica Hook., P. Bkm- 

 chetii Gardn., and F. Gaulotreti Karst., which closely resemble 

 one another. The vegetable organs of these species consists of 

 threads or, at times, flat expansions which are found in the last 

 and from which suckers are given off which penetrate into the 

 wood. The name given to the thread-like expansions is thallus, 

 from its resemblance to the structures of the same name in crypto- 

 gams. The flower buds are produced as adventitious offshoots 

 from the threads of the thallus, and finally burst through the bark 



luuer oarK, is noi composea ot threads but of flat expansions oi 

 considerable size. They are at first destitute of vessels, which, 

 however, make their appearance about the time of the formation 

 of the flower buds. Part III is devoted to the vegetative organs 

 of the BalanophorecB, and the writer concludes a? follows: "It is 

 the object of the present essay to call attention to the fundamental 

 uniformity of the development and conformation of the assimilat- 

 ing organs of the phanerogamic parasites. This object has been 

 attained if we have been successful in showing that they all have 

 a common characteristic in the absence of any'sort of differentia- 

 tion of organs of vegetation such as we find in the Cormophytes, 

 that their organs can be neither roots nor stems, but that we are 

 compelled to recognize them as thalline structures equivalent and 

 completely analogous to those of the Thallophytes. This would 

 have pleased Lindley, as indicating a structural foundation for his 

 class of Mhizogens. w. g. f. 



10. The Movements and Habits of Climbing Plants; by 

 Charles Darwin, M.A, F.R.S., etc. 2d ed., revised, with illus- 

 trations. 208 pp. 8vo.— This work by Darwin, noticed at page 

 69 of this volume, has recently been republished bv D. Appleton 



