One of the curious and most important features of the book is the interpolation between his notes on pages 155 and 157 of Merula's edition of four lengthy lists of Dutch, Anglo-Saxon, Gotho-Nordic, and Celtic monosyllabic words with discussion of their etymology, especially their links with Greek; what is particularly interesting is that Junius -- a century and a half before Rasmus Rask and Jacob Grimm -- already clearly discerns some of the features of the First (or Germanic)
Consonant Shift.
Grimm's Law (also known as "The First
Consonant Shift") identified three successive changes in the pronunciation of certain Indo-European (IE) consonants by speakers of the Germanic (Gmc) branches of the language.
Thus Hogg refers to Luick when discussing palatalisation (260-261,263,275), assibilation (272), assibilation of [sc] (271), fricative voicing (283-284), development of velars (289), gemination (294), consonant loss (297), epenthesis (298), assimilation (300-301), and
consonant shifts (306).