ANALYTICAL INDEX. 



331 



CHAPTER I. continued. 



Characteristics of the Horse Leech and Medicinal Leech, PAGE 23 



M. M. Tandon, ...... ib. 



Food of the Horse Leech, . . . . .24 



Leeches readily injured by excess in feeding, . . ib. 



The Horse Leech of easy preservation, . . .25 



Plate III. explained, .... 26 



6. HIRUDO MEDICINALIS, The Medicinal Leech, . . . ib. 



Mr Brightwell, ...... ib. 



Difference between this and the Horse Leech, . . 27 



Distinguishing marks, ..... ib. 



Alike restless and voracious, . . . . . ib. 



Becomes torpid on exposure to cold, ... 28 



Indigenous in different parts of Scotland, . . . ib. 



John Burn Murdoch, Esq., of Gartincaber, . . ib. 



Dr Fleming Leeches bred by an apothecary in Cupar, . 29 



M. Tandon, ...... ib. 



Imported chiefly from Sweden, . . . . ib. 



Trade in Leeches between France and Africa, . . 30 



Plate III. explained, . . . . . . ib. 



7. HIECDO COMPLANATA, Glossipora tuberculata, Dr James Ilawlins 



Johnson, ...... ib. 



Description of the flattened Leech, ... ib. 



Natural abode of this species in lakes or ponds, . . 31 



Feeds on both animal and vegetable substances, . . ib. 



Its attack on the Helix peregra, its natural prey, described, . 32 



Season of breeding, March and April, ... 33 

 Process described, ...... 34 



Resume of the history of the leech, ... 35 

 Plate IV. explained, ...... 36 



8 HIRUDO STAGNALIS, The Pond Leech, ... ib. 



Widely diffused throughout Scotland, . . . ib. 



Smaller than the former, ..... ib. 



Characteristic differences, . . . . . ib. 



Food vegetable matter, fish, and larva, ... 37 

 Propagation, ....... 38 



Plate IV. explained, ..... ib. 



9. HIRUDO TESSELLATA, The Chequered Leech, . . . ib. 



Difficulty of identifying this species, ... ib. 

 Reason why, ....... 39 



