544 



INDEX. 



452t, 454t, 460t, 463t, 467t, 

 469t, 488t. 



D 



Dapbnella, 452t, 4711- 

 DaphniH, 439t, 459t, 460t, 46 It- 

 hyalina, 437t. 

 pulex, 4671- 

 Daphniidae, 4711. 

 Darluca, l68. 

 Datana angasi, 288, 298, 301, 312, 



320. 

 ministra, disease of, 258, 259, 



295-300. ISee under disease 



of Yellow-necked Apple 



Caterpillar. 

 l>ay-flies, iarvie, 4631, 484t. 

 De Candolle, A. P., Flore Franc. 



cited. 151. 

 Decapoda, 4691, 47 If, 473t. 

 dentata, Allorchestes, 459t, 4611, 



467t, 486t. 

 Descriptive Catalogue of the North 



American Hepaticte, North 



of Mexico, 1-133. 

 Description of New Illinois Fishes, 



135. 

 Desmodium, 160. 

 Detmers, H. J., 321. 



photographs by, 259. 

 Diabrotica vittata, 4371. 

 Diaptomus, 461t. 

 Diatoms, 4391, 450t, 4541, 461t, 4661, 



471t, 4911. 

 Dicseoma, 178. 



Diedrocephala, moUipes, 4371. 

 Diffiugia, 4481, 452t, 454t, 463t, 469t, 



4731, 4901. 

 Dilfena, 57. 

 Dineutes, 484t. 

 Dinobryon, 4901. 

 Diploltena, 57. 



Diplopliylluni,104, 105, 107. 108, 125. 

 Dipt era, 437t, 4391. 468t, 470t. 472t, 

 aquatic, 472|. 



larvfie, 442t, 44.3t, 448t, 461 1, 

 495t. 

 aquatic, 468t, 470t, 483t. 

 terrestrial, 468t, 470t, 4721- 

 Dirt, 439t. 



discoidea, Arcella, 4511. 

 Diseases of Insects, Studies on the 

 Contagious, 257-321. 

 objects of investigating, 



260. 

 summary and conclusion, 

 317. 

 of Forest Tent Caterpillar, 315. 

 of Pieris brassica?, 267. 

 of Pieris rapaj, 259, 260, 282, 

 285, 294, 317. See Cabbage 

 Worm, European, 

 of Silkworm, 277-295. See Silk- 

 worm, Disease of. 

 of Walnut Caterpillar, 301, 320. 

 of Yellow-necked Apple Cater- 

 pillar, 295-300, 320. 

 artificial cultures, 298, 320. 

 characteristic bacteria, 296. 

 contagious character, 298. 

 description, 295, 320. 

 infection experiments 

 with, 300, 320. 

 of Zebra Caterpillar, 305. 

 of plants and animals, 147. 

 Distillery refuse, 4911. 



slops, 438t, 44lt, 443t, 452t, 453t, 

 457t, 460t, 462t, 4691, 471t, 

 473t, 491t. 

 Dog Fish, 463*. 

 Dogwood, injury to, by Forest Tent 



Caterpillar, 315. 

 Dorosoma, 435t, 4641, 480t. 



cepedianum, 437* 439t, 468*t. 

 and Ambloplites rupestris, 

 food of, compared, 498. 

 raptatorial teeth in early stage, 

 496. 

 Dorosomatidse, 437. 

 Dothidea, 217. 



Dragon- Hies, larv?e, 434t, 450t, 

 458t, 467t, 485t. 



