Current Literature 219 



The author then describes the results of an examination of 

 four sample plots on the Kaniksu and Coeur d'Alene Forests on 

 Western White pine, with tables. Realizing that the material 

 collected so far does not allow of final conclusions, the author 

 presents conclusions as to the suitability of the proposed method. 



The first find — which might have been anticipated — is that prac- 

 tically the first two crown classes, the dominant, produce all the 

 seed, namely 54.3 and 44.5 per cent, the IV and V classes, none. 

 It is then assumed, perhaps correctly, that in poor seed years 

 only class I, in exceptionally good seed years the lower tree 

 classes also, bear seed, so that from the fact that fewer or more 

 crown classes bear cones the relative amount, as good, fair, or 

 poor, of seed production may be predicted. The superiority of 

 the I crown class and next of the II crown class showed itself 

 also in germination per cent. 



The age apparently influenced the viability of seed, the younger 

 trees (72-100 years-]-) producing, besides longer cones containing 

 more seeds, also more germinable seed than older trees ; the highest 

 germination of the youngest trees being 90, the highest in older 

 only 67.5 per cent. The well-known fact that the larger cones 

 produce more viable seed was borne out, as well as the other 

 generally established fact that the heavier seed is the better. The 

 more rapid growers seem also to produce the better seed. 



Th largest single tree production was 6,000 seeds or 2}^ 

 ounces, and the per acre production varied between 3^ and 5 

 pounds, between 75 and 150 thousand seeds, for a moderately 

 good seed year. 



We congratulate the author on the successful start in this 

 direction, which promises soon to give the assurance that the 

 basis for judgment of seed production with us must be about 

 the same as that which guides the European forester. 



B. E. F. 



The Trees of Great Britain and Ireland. By Henry John 

 Elwes and Augustine Henry. Edinburgh, privately printed. 

 Seven volumes. 1906-1913. Pp. 1,933, pis. 412, 4°. 



These monumental and expensive volumes ($128.00), which 

 came from the press in seven years, handsomely printed and 

 illustrated, represent the most ambitious work of English writers 



