237 



cer, formerly connected with the Colonial Hospital, Port of 

 Spain, some hopes are gathered that the fresh juice of the Cin- 

 eraria maritima, Willd., may be found to possess the power of 

 causing the absorption of cataract. H. H. R. 



Native Flowers of New Zealand illustrated in colors. By 

 Mrs. Charles Hetley, Although not intended as a botanical 



contribution, the drawings reproduced in these portfolios are true 

 to nature, and include several plants new to the flora of New 

 Zealand. The work has been carefully supervised by native 

 botanists and each plate is accompanied by a short description ; 

 It was also intended to give a botanical dissection of the flower 

 in each, but for some reason these have been omitted. Tliree 

 parts have already appeared, each containing twelve chromo- 

 lithographs, large quarto size, at the price of £z is. If a suffi- 

 cient number of copies are sold the work will be continued, A 

 specimen of the plates will be forwarded free on application to 

 the publishers, Sampson Low, Marston & Co., London. 



Review of Foreign Literature 



freezing of 



seed influences the development of the plant afterward develop- 

 ing from the same. By L. Kny. (Sitzungsbericht der Gesell- 

 schaft Naturforschende Freunde zu Berhn vom 15 Novemb. 

 1887.) 



One of the most marked characteristics of the vegetation of 

 cold climates is the extreme rapidity of its growth, both 

 vegetative and reproductive. Grisebach says that the polar 

 willow, when its shoots are only about one inch long, begins to 

 blossom, and this weeks before the sap begins its upward stream- 

 ing. Christ says, however much the climate of the Alps excites 

 I'apid development of vegetation, plants growing lower down on 

 'e sides of the Alps show the same propensity, but with this 

 difference: those of any species above blossom earlier than those 

 of the same species growing lower down, although the latter 

 develop their leaves earlier. He considers this due to increased 

 insolation. Several other authors refer this, not to any direct 

 influence during the time of development, but rather to the 

 influence of extreme cold on perennial plants during the winter 



th 



