194 THE PLANT WORLD. 



In a letter to the editor, Mr. Walter Deane of Cambridge, Mass., 

 states that his private herbarium now numbers 35,000 sheets. Mr. 

 Deane's herbarium is practically confined to plants of the Gray's Man- 

 tial region, and he has brought together the most magnificent and com- 

 plete representation ever made of this flora. It is especially rich in 

 features not usually seen in herbarium specimens, such as series from 

 seed to mature plant, complete root-systems, etc. 



Not only in Florida, but in California, orange orchards or groves 

 are liable to injury from frost, and experiments of various kinds are 

 being made to protect them. At the famous Riverside, in California 

 the thermometer falls at times to freezing point. For protection, a 

 grower at that place constructed a hot-water boiler, at a cost of $200, 

 to run hot-water along open furrows. The water passed from the 

 boiler at 85° when the outside temperature was 32°, the earth at (S(iQ 

 feet from the boiler was found to be 36° and the vapor arising from 

 the warmed earth, protected the plants. — Meehaiis^ Monthly for 

 NovemJjer. 



BOOK REVIEWS. 



Webster's International Dictionary. A New Edition revised 

 throughout with a supplement of 25,000 additional words. Royal 

 4to, 2,364 pages, 5,000 illustrations. The G. and C. Merriam 

 Co., Springfield, Mass. 



The publishers of the original Webster's Unabridged Dictionary, 

 issued in 1847, have just brought out a new edition of Webster's In- 

 ternational Dictionary, the first edition of which appeared in 1890. 

 In the new edition the publishers, following the example set by the 

 Century and Standard Dictionaries, have secured the assistance of re- 

 cognized authorities to prepare the definitions in the various depart- 

 ments of science. It is a matter of congratulation that the public in- 

 terest in a precise knowledge of scientific terminology has been so 

 strong as to effectively demand such definitions in our general diction- 

 aries. 



The definitions in botany have been prepared by Professor Lester 



