NOTICES OF BOOKS AND MEMOIRS. 345 



Dickson, I have had the pleasure of examining the specimens 

 referred to by Mr. Spruce (p. 307), they being now in the 

 University Herbarium at the Eoyal Botanic Gardens, Edin- 

 burgh. They appear to be just in the condition referred to by 

 Mr. Spruce, his numbers still remaining, and a note in his hand- 

 writing pinned to the sheet, a copy of which I append, as it is 

 slightly different in form but not in sense from the quotation as 

 above referred to : — " 1,2,3. Hypnum salehrosum, Hoffm., fiorescentia 

 monoica (fl. masculis in caule divisionibusque ]3rimariis saspius 

 juxta flores fcemineos dispositis), pedicello laevissimo, &c. 4. H. 

 lutescens, Huds., foliis confertis, strictioribus, siccitate arete ad- 

 pressis, striis profundioribus notatis, acumine paulo breviore. R.S. 

 Jany. 1847." The specimens, being glued fast to the paper, were 

 not easily to be examined, but they apparently agree in all essential 

 characters with B. salehrosum. The fructification is distinctly 

 monoicous ; the setfe quite smooth ; the capsule olive, of the usual 

 shape and inclination ; the leaves longly acuminate, but not quite 

 so strongly serrulate as in some specimens I have, particularly so 

 with respect to no. 286 of Grravet's ' Bryoth. Belg.' ; the stem is 

 densely clothed with radicles, and distinctly but irregularly pin- 

 nate. It cannot be rutabulum from its smooth setae, and its 

 monoicous inflorescence prevents its being referred to glareosum. 

 CamiJtothecium aureum I am not acquainted with. — 0. P. Hobkirk. 



^Extracts autr Notices of Boofts & iEcmoivs, 



REPORT OF THE HERBARIUM OF THE ROYAL 



GARDENS, KEW, FOR 1878. 



By Sir J. D. Hooker, K.C.S.L, &c. 



Physiological Laboratory. — During the past year the Jodrell 

 Laboratory has been emploj^ed by Prof. Burdon Sanderson, F.R.S., 

 in his continued resoarches on the electrical phenomenon of plants 

 exhibiting spontaneous movements ; by Prof. Church in studying 

 albinism in plants ; by the Rev. R. Abbay in working at the 

 development on living coffee plants of Hemileia vastatrix ; and by 

 Mr. F. Darwin for observations on the physiology of leaves. 



Herbarium. — The most considerable contribution to this 

 department, and, considering its importance in respect of the 

 agricultural interests of this country, India, and the colonies, the 

 most important of the kind, perhaps, ever contributed to such an 

 institution as Kew, is the Mycological Collection of the Rev. M. J. 

 Berkeley, F.R.S. For upwards of half a century Mr. Berkeley has 

 been well known as the most accomplished and persevering 

 student of the Fungi; his labours and writings on the ravages 

 which these plants inflict on our field-crops, gardens, orchards, 

 vineyards, forests, &c., have benefited mankind, and greatly 



2y 



