REVIEWS. 125 



Fig. 4. — Ovum of Caligus. 

 5. — Very young Caligus. 



jj 



Plate XTI. 



Upper Portion. 

 Fig. 1. — Immature spicules of Spongilla fluviatilis. 



Drawn by Jas. Fullagar. 

 Lower Portion. 

 „ 2. — Foot of fly found in corners. 

 , , 3. — Shows their method of congregating together. 



Drawn by E. Tutte. 



Plates XV. and XVI. are unavoidably deferred ; they will be 



given in our next. 



1Review)6. 



American Medicinal Plants : An Illustrated and Descrip- 

 tive Guide to the American Plants as used as Homoeopathic Remedies ; their 

 History, Preparation, Chemistry, and Physiological Effects. By Charles F. 

 Millspaugh, M.D. Fascicle III. (New York : Boericke and Tafel. i886.) 

 Price I5. 



It gives us much pleasure to call attention to the third instalment of this 

 grand work. The part before us contains 30 beautifully coloured large 4to 

 plates, drawn from nature and of natural size. The text accompanying each 

 plate is well printed and thoroughly descriptive, and the work when completed 

 will prove a valuable addition to the Hbrary, whether of the Homoeopathic or 

 Allopathic Practitioner. Fascicle IV. will be ready shortly. 



Gray's Botanical Text-Books. Sixth Edition. 

 Vol. I., Structural Botany; or, Organography on the Basis 



of Morphology, to which is added the Principles of Taxonomy and Phyto- 

 graphy, and a Glossary of Botanical Terms. By Asa Gray, LL.D., etc. 

 bvo, pp. xii. — 442. 



Vol. II., Physiological Botany. Part I., Outlines of the 



Histology of Phsenogamous Plants ; Part II., Vegetable Histology. By George 

 Lincoln Goodale, A.M., M.D. 8vo, pp. xxi., 499 — 36. (New York : Ivison, 

 Blakeman, Taylor, and Co. 1885.) Price §2.30 each. 



Professor Asa Gray is certainly indefatigable. In his 75th year he has 

 brought out a sixth edition of his very valuable text-book ; and with him we 

 know that a new edition means a thorough re-writing and re-arranging the 

 whole matter. The present work will consist of four volumes, and will, when 

 finished, form a most valuable and complete system of Botany. Of the two 

 volumes before us the first is written by Professor Asa Gray himself, and is 



