REPORT FOR 1874 OF THE HERBARIUM AT KEW. 313 



Fi^. 12, magnified about 90 diams. A young germinating plant, base of 

 the primary root divided. 



Fig. 13. The same in a more advanced stage. Chalk of the shell not dis- 

 solved. 



Fig. 14. A cross section immediately below the node. 



Figs. 15 and 16, magnified 145 diams. Cross sections of stem-nodes of pro- 

 embryos in a rather younger stage than fig. 14, i, initial cell of the first stem, 

 d, of the first leaf, b precedes i a little. The remaining cells numbered accord- 

 ing to their order of origin. 



Fig. 17. Cross-sectional view of a root-node, in which all the cells were 

 developed in proper sequence, a',a, roots cut off. The section is a little above the 

 node, and shows the succeeding cell of the pro-embryo as a circular figure. 

 Fig. 18. Tolypella glomerata. 



Fig. 18, magnified about 80 diams. Germinating plant. 

 Figs. 19 — 26. Chara aspera. 



A series of cross sections of stem-nodes of accessory pro-embryos of root 

 origin, in various stages of development, magnified 145 diams., prepared and 

 drawn by Mr. Kamienski. Order of development following the number. 

 h. halving- wall. The meaning of the other letters as in fig, 14. For fuller 

 explanation of the irregular development of 25 and 26 see text. 



REPORT FOR THE TEAR 1874 OE THE HERBARIUM OF 

 THE ROYAL GARDENS AT KEW. 



By J. D. Hooker, C.B., M.D., F.R.S. 



The great desirability of providing a more commodious and fire- 

 proof building for the Herbarium, JLibrary, MSS., and collections of 

 drawings of plants which have for twenty years been by the gracious per- 

 mission of her Majesty temporarily accommodated in the residence of 

 the late King of Hanover, and which was mentioned in the Report for 

 1873, is now under the consideration of the Government. In the 

 event of such a building being erected, it will be associated with a 

 laboratory for physiological botany through the liberality of Thomas 

 Philip Jodrell, Esq., M.A., the founder of the Jodrell Professorship 

 (of Physiology) in University College, London. 



About 22,000 specimens from all parts of the world have been 

 received at the Herbarium (chiefly by presentation) during the past 

 year. The most important contributions are especially noticed below 

 under the different geographical headings. 



Eueope. — Anzi, M. ; Italian lichens, including many of Massa- 

 longo's types (purchased). Clausenburg, Museum of the University 

 of; a large collection of plants from Hungary, &c. Duthie, Prof.; 

 plants from Malta, &c. (purchased). Geheeb, Dr. A. ; a very excellent 

 collection of Mosses. Krempelhuber, Dr. von. ; Lichens. Phillips, 

 W. ; British Elvellacei (purchased). Rabenhorst, L. ; published col- 

 lections of Hepatic(^y Lichenes^ and Algo, Reinsch, Dr. P. ; published 

 collection of microscopical preparations of AI(/(B. Sintenis, Bros. ; a 

 large collection from Turkey (purchased). Swedish Academy of 

 Sciences, Royal ; Arctic mosses (Swedish Polar Expedition). Nord- 



