402 Ri'VH'ws and Book Noficcs. 



nor did the well-known Dutch naturalist, the Curator Mynheer 

 Konii^sberger. 



On my return to Singapore, I recounted the facts to Dr. 

 Hanitch, the Curator of the Sing-apore Museum, who had also 

 never heard of this faculty possessed by leaping- spiders. This 

 being- so, I wrote to R. I. Pocock, the g-reatest l^nglish authority 

 on spiders, giving- an account of this wonderful faculty, and he 

 replied to niy letter, saying- that the faculty was quite unknown 

 to naturalists. With the exception of stridulating- organs in 

 deaf spiders, discovered some years ag-o, this is perhaps one of 

 the strangest observations made in connection with these 

 creatures. And having been made by a member of our York- 

 shire Union, it may be worth while to publish a brief notice of 

 it in our Yorkshire 'Naturalist.' I hope to pursue the subject 

 further but it is not easy to obtain the spiders. The species of 

 Attida are very numerous, and most likely the faculty is only 

 possessed by a few of them. 



Note. — Since then I have been visited by not a few attidae, 

 but never by the green and brown large eyed one. Almost 

 every fresh one was quite different from the previous one. The 

 number of different kinds must be enormous. 



The Wonders of Life. B)- Ernst Haeckel. Translated by Josepli 

 McCabe. [Issued for the Rationalist Press Association, Ltd.] Watts&Co., 

 1906. Paji^'es xiv. + 501, price 2/6 net. 



The present edition of Haeckel's ' Popular Study of Bi()lo.i;ical Philosophy,' 

 can be strong-ly recommended to readers of this journal on account of its 

 cheajjiiess, and on account of the excellent way in which it has been issued. 

 The tv|X' is yood, the paper suitable, and ihoug^h the book is fairly sub- 

 stantial, it is lii;ht and easy to hold. At half-a-cro\vn no one should be 

 without 'The Wonders of Life.' 



A Naturalists' Holiday: Idle hours on the Cornish Coast. Hy 

 Edward Step. T. Nelson and Sons. 316 pag-es, price 3/6. 



Mr. Steps work is well known as readable and reliable, and in 'A Natu- 

 ralists' Holiday' he well describes the fishes, crustaceans, zoopiiytes, etc., 

 occurrinjf in the Cornish rock pools. The book is purposely written for the 

 benefit of youn.n- readers, who will doubtless derive much i^leasure from a 

 perusal of its paj^es. Some of the chajMers have previously api)eared in the 

 Boys' Chvn Ptiper, and similar publications. There are numerous illustra- 

 tions in the lext, and some plates, the latter however are rather too hijjfhly 

 coloiu'ed. 



A Text Book of Mining; Oeolo8:y. For the use of mining- students 

 and miners. Hy James Park. C. C.rilfin & Co., Ltd., 1906. 219 pages, 

 price 6/-. 



The title of this carefully-written work defines its scope, and it can safely 

 be .said that Professor Park's Text Book will be found most useful to those 

 in anv way interested in Mining or in Economic Ceology. The prominence 

 that has been given to Mining (ieology in recent years, and tiie great im- 

 IXMlance and necessity of a thorough geological knowledge being pos- 

 sessed 1)V all those participating in any way in mining operations, warrants 

 such a work ;is the oni- just issued. It should receive a ready s;de. 



Naturalist. 



